CN2331857Y

CN2331857Y - Driving-level spinning type feeder when coal pipe block-up

Info

Publication number: CN2331857Y
Application number: CN 98237224
Authority: CN
Inventors: 徐国斌; 袁金祥; 宋超义
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-09
Filing date: 1998-04-09
Publication date: 1999-08-04
Anticipated expiration: 2008-04-09

Abstract

The utility model relates to a rod pulling and spiral press type coal clogging dredging device for coal lowering pipes, which belongs to an additional device for boiler coal-fired systems in power plants. The utility model has the structure that a horizontal and a vertical drive valves are fixed on a coal lowering pipe; valve rods of a drive valve are connected with a main shaft of a vertical poking rod through a connecting rod respectively; a horizontal poking rod is fixed on the main shaft; the horizontal poking rod can move up and down; the poking rod can rotate horizontally and move up and down in the coal lowering pipe to ensure that coal is continuously fed in the coal lowering pipe through the horizontal and the vertical drive valves. The utility model has the advantages of simple structure, and convenient installation and use. Besides, the coal is automatically poked in the coal burning process of the boiler, so the safe operation of the boiler is ensured, and the operation of the utility model is reliable and stable.

Description

Dead man rotary extrusion type spinning coal spout chute blockage dredge

The utility model relates to accessory device in a kind of power plant coal burning system, is adapted at installing and using in the large-sized boiler fire coal.

In the coal burning system of thermal power plant; the tapered body of former coal bunker that the storage coal is used; the below neck connects feeder; by the feeder that rotates coal stream slowly is sent to coal pulverizer; when water content is higher in the coal; the chute blockage phenomenon very easily takes place; make feeder owe coal and cause protectiveness autostop in the coal pulverizer automatic control system; cause the boiler combustion instability, in coal, contain rainy, snow more for a long time, the chute blockage phenomenon is very serious; utilize artificial removing to block up; labour intensity is big, and operational outfit is absolutely unsafe, and makes troubles to operation and maintenance.

For solving the generation of chute blockage phenomenon in the above thin coal process, the purpose of this utility model provides a kind of dead man rotary extrusion type spinning coal spout chute blockage dredge, utilizes dredge just can effectively solve chute blockage problem in the coal-fired process.

The structural design of the utility model is achieved in that its structure of this coal loosener is the upper fixed slideway support at the coal spout of boiler, slide block is housed in the slideway, slide block connects with horizontal drive valve stiff end, it below the driver's valve driver's valve fixed cover, the dead man vertical shaft vertically is housed in the fixed cover, the following level of main shaft, at interval, equidirectionally be fixed with three dead mans, the dead man outside is added with guard shield, side at coal spout is fixed with bracing frame, the bracing frame both sides connect with the stiff end of two vertical drive valves respectively, the valve rod of two vertical drive valves is fixedly connected with the horizontal fixed bar respectively, and horizontal fixed bar and dead man main shaft are fixed as one (as shown in Figure 1); The valve rod of the horizontal drive valve at top and dead man turning arm one termination are fixedly connected (as shown in Figure 2) with rotating shaft, another termination of dead man turning arm and dead man main shaft top are fixedly connected, driver's valve can be pneumatic operated valve or hydraulic valve, driver's valve connects with the outside drive source by pipeline respectively, the work of horizontal drive valve, valve rod drives the dead man turning arm and does the horizontal direction rotation together with the dead man main shaft, and vertical valve work drives the dead man main shaft and does simultaneously to move vertically together with dead man and horizontal drive valve.

The advantage of the utility model: simple in structure, easy to install, in the boiler fired coal process, to stir automatically, continuously coal supply has guaranteed the security of operation of burner, device stable and reliable operation.

The detailed structure of the utility model is provided by following examples and accompanying drawing.

Fig. 1 is a dead man rotary extrusion type spinning coal spout chute blockage dredge structure principle chart;

Fig. 2 is dead man rotary extrusion type spinning coal spout chute blockage dredge plan structure figure.

Its structure is labeled as by shown in Fig. 1,2: 1. coal spout; 2. slideway support; 3. slide block; 4. horizontal drive valve; 5. driver's valve fixed cover; 6. driver's valve fixed bar; 7. vertical drive valve; 8. bracing frame; 9. dead man turning arm; 10. dead man; 11. dead man guard shield; 12. dead man main shaft.

Its course of work: open the driver's valve drive system and make the work of vertical drive valve, at first make dead man be put into foot, drive the horizontal drive valve this moment again, the valve rod of horizontal drive valve drives the dead man main axis rotation by the dead man turning arm, the fixing dead man in dead man main shaft bottom is made horizontal hunting in coal spout, make the coal in the coal spout export from the bottom in rapid succession, the supply boiler uses, because the continuous alternation of horizontal drive valve and vertical drive valve, coal loosener is successively moved up and down, the work that swings has guaranteed the abundant coal supply of coal-burning boiler.

Claims

1. dead man rotary extrusion type spinning coal spout chute blockage dredge, the upper fixed slideway support (2) that it is characterized in that coal spout (1) at boiler, slide block (3) is housed in the slideway, slide block connects with horizontal drive valve (4) stiff end, it below the driver's valve driver's valve fixed cover (5), dead man main shaft (12) vertically is housed in the fixed cover (5), the following level of main shaft (12), at interval, equidirectional three dead mans (10) that are fixed with, the dead man outside is added with guard shield (11), be fixed with bracing frame (8) in the side of coal spout (1), bracing frame (8) both sides connect with the stiff end of two vertical drive valves (7) respectively, the valve rod of two vertical drive valves (7) is fixedly connected with the horizontal fixed bar respectively, and horizontal fixed bar and dead man main shaft (12) are fixed as one; The valve rod of the horizontal drive valve (4) at top and dead man turning arm (9) one terminations are fixedly connected with rotating shaft, and another termination of dead man turning arm (9) and dead man main shaft (12) top are fixedly connected.