阅读说明：本技术 自流式防堵落煤管总成 (Self-flow anti-blocking coal dropping pipe assembly ) 是由 李中庆 王海龙 乔桂荣 李振福 肖佐华 宋建生 赵玲 赵艳艳 李泽锦 李泽昊 于 2020-04-07 设计创作，主要内容包括：本发明涉及一种自流式防堵落煤管总成,在落煤管上同轴连接有与落煤管连通的导流管,导流管的迎料端、送料端分别转动套装有连接环座,连接环座与落煤管连接；导流管的内壁上均匀间隔设置有4-6片由迎料端向送料端螺旋1/8-1/12周的螺旋导流叶片,螺旋导流叶片上下两端的连线与导流管端面之间的夹角α为45-55°,朝向迎料端的螺旋导流叶片的导流面与导流管内壁之间的夹角β为65-75°,螺旋导流叶片的高度为导流管内壁直径的1/15-1/20；导流管的外壁通过传动齿环与动力机构连接,该防堵落煤管总成可利用煤粉自身重力、后段煤粉对前段煤粉的挤压力推动导流管转动疏通堵塞的煤粉实现顺利下行,降低落煤管堵塞概率,并配以电机进一步避免煤粉堵死,输送效率高。(The invention relates to a self-flowing anti-blocking coal dropping pipe assembly, wherein a flow guide pipe communicated with a coal dropping pipe is coaxially connected to the coal dropping pipe, a material facing end and a material feeding end of the flow guide pipe are respectively and rotatably sleeved with a connecting ring seat, the connecting ring seat is connected with the coal dropping pipe, 4-6 spiral flow guide blades which are spirally 1/8-1/12 circles from the material facing end to the material feeding end are uniformly arranged on the inner wall of the flow guide pipe at intervals, an included angle α between a connecting line of the upper end and the lower end of each spiral flow guide blade and the end surface of the flow guide pipe is 45-55 degrees, an included angle β between a flow guide surface of each spiral flow guide blade facing the material facing end and the inner wall of the flow guide pipe is 65-75 degrees, the height of each spiral flow guide blade is 1/15-1/20 of the diameter of the inner wall of the flow guide pipe, the outer wall of the flow guide pipe is connected with a power mechanism through a transmission gear ring, and the anti-blocking coal dropping pipe assembly can push the flow guide pipe to rotate coal powder to be blocked by utilizing the self gravity of the.)

1. A self-flowing anti-blocking coal dropping pipe assembly comprises a coal dropping pipe and is characterized in that a guide pipe communicated with the coal dropping pipe is coaxially connected to the coal dropping pipe, the upper end of the guide pipe is a material receiving end, the lower end of the guide pipe is a feeding end, the material receiving end and the feeding end of the guide pipe are respectively rotatably sleeved with a connecting ring seat, the other end of the connecting ring seat is connected with the coal dropping pipe, 4-6 spiral guide vanes which are spirally 1/8-1/12 circles from the material receiving end to the feeding end are uniformly arranged on the inner wall of the guide pipe at intervals along a circle, an included angle α between a connecting line of the upper end and the lower end of each spiral guide vane and a plane where the end face of the guide pipe is located is 45-55 degrees, guide surfaces of the spiral guide vanes are parallel to each other, an included angle β between the guide surface of the spiral guide vane facing the material receiving end of the guide pipe and the inner wall of the guide pipe is 65-75 degrees, the height of the spiral guide vane is 1/15-1/20 degrees of the diameter of the inner wall, a power mechanism is arranged at a position far away from the edge of the guide vane at the material receiving end of the guide pipe, the guide vane is gradually reduced in thickness, and the transmission gear ring.

2. The self-flowing anti-blocking coal chute assembly of claim 1, wherein: the power mechanism comprises a motor and a speed reducer, an output shaft of the speed reducer is connected with a wheel shaft of a power output gear, the power output gear is meshed with the transmission gear ring, and the motor rotates to drive the transmission gear ring and the flow guide pipe to rotate.

3. The self-flowing anti-blocking coal chute assembly of claim 2, wherein: the motor is connected with the control unit, and the control unit outputs a shutdown/startup signal to the motor after the motor continuously works/has a rest for a set time.

4. The self-flowing anti-blocking coal chute assembly of claim 3, wherein: still include the shell body, the both ends of shell body pass through flange joint with the coal breakage pipe respectively, connecting ring seat, honeycomb duct and power take off gear all set up in the inner chamber of shell body to the inner wall of shell body is located to the fixed cover of connecting ring seat.

5. The self-flowing anti-blocking coal chute assembly as claimed in claim 1 or 4, wherein: install clear shovel subassembly on the inner wall of honeycomb duct, clear shovel subassembly is including helping the push rod and clear shovel blade, help the push rod to set up in the inner wall of honeycomb duct along the axial, clear shovel blade is the crooked arc blade of orientation center pin to install on helping the push rod clear one side of shovel blade, clear opposite side of shovel blade is provided with clear shovel domaticly, and clear shovel domatic end pastes with the honeycomb duct inner wall and touches.

6. The self-flowing anti-blocking coal chute assembly of claim 5, wherein: the push-aid rod is provided with cleaning blades at the material receiving end and the material feeding end of the guide pipe respectively, wherein the length of the cleaning blade at the material receiving end of the guide pipe is smaller than that of the cleaning blade at the material feeding end of the guide pipe, and the width of the cleaning blade at the material receiving end of the guide pipe is larger than that of the cleaning blade at the material feeding end of the guide pipe.

7. The self-flowing anti-blocking coal chute assembly of claim 6, wherein: ceramic coatings are sprayed on the inner wall of the guide pipe, the surfaces of the spiral guide vane and the surfaces of the cleaning and shoveling vanes.

Technical Field

The invention relates to the technical field of anti-blocking of coal breakage pipes, in particular to a self-flow anti-blocking coal breakage pipe assembly.

Background

Under the influence of conditions such as weather, when the humidity of coal is higher, the viscosity of the coal is increased, so that the pulverized coal is easy to adhere to the coal dropping pipe, the effective flow area of the coal dropping pipe is shortened, and the coal blockage of the coal dropping pipe is caused. For power plants, the problem of coal blockage of coal supply systems always troubles domestic and foreign power generation enterprises. The coal dropping pipe has serious blockage, the operation safety and reliability of a boiler and a unit of a power plant can be directly influenced, if the coal blockage phenomenon is serious, the labor intensity of personnel is high, and serious potential safety hazards can be caused.

Generally, in case of coal blockage, most of power plants use a large hammer to knock the side wall of a coal dropping pipe, so that pulverized coal in the coal dropping pipe is shaken off, even the blocked part of the coal dropping pipe is cut off, after the coal dropping pipe is cleaned again, two sections of coal dropping pipes are connected again, and a part of the coal dropping pipe is additionally provided with a crushing knife or a crushing hammer, but a knife shaft and a blade greatly occupy the original through flow area of the coal dropping pipe, so the effect is not good.

Disclosure of Invention

The invention aims to provide a self-flow anti-blocking coal dropping pipe assembly to solve the problem that a coal dropping pipe in the prior art is easy to block coal.

In order to solve the problems, the self-flowing anti-blocking coal dropping pipe assembly adopts the following technical scheme:

a self-flowing anti-blocking coal dropping pipe assembly comprises a coal dropping pipe, wherein a guide pipe communicated with the coal dropping pipe is coaxially connected to the coal dropping pipe, the upper end of the guide pipe is a material receiving end, the lower end of the guide pipe is a feeding end, the material receiving end and the feeding end of the guide pipe are respectively rotatably sleeved with a connecting ring seat, the other end of the connecting ring seat is connected with the coal dropping pipe, 4-6 spiral guide vanes which are spirally 1/8-1/12 circles from the material receiving end to the feeding end are uniformly arranged on the inner wall of the guide pipe at intervals, an included angle α between a connecting line of the upper end and the lower end of each spiral guide vane and a plane where the end face of the guide pipe is located is 45-55 degrees, the guide faces of the spiral guide vanes are parallel to each other, an included angle β -75 degrees between the guide face of the spiral guide vane towards the material receiving end of the guide pipe and the inner wall of the guide pipe is 65-75 degrees, the height of the spiral guide vane is 1/15-1/20 degrees of the diameter of the inner wall of the guide pipe, a power mechanism is sleeved on the edge position of the guide vane far away from the inner wall of the guide pipe, and a transmission mechanism is connected with a tooth ring, and a transmission mechanism is connected.

According to the self-flow anti-blocking coal dropping pipe assembly, the power mechanism comprises the motor and the speed reducer, an output shaft of the speed reducer is connected with a wheel shaft of the power output gear, the power output gear is meshed with the transmission gear ring, and the motor rotates to drive the transmission gear ring and the flow guide pipe to rotate.

According to the self-flow anti-blocking coal dropping pipe assembly, the motor is connected with the control unit, and the control unit outputs a shutdown/startup signal to the motor after the motor continuously works/has a rest for a set time.

Foretell stifled coal breakage pipe assembly is prevented to gravity flow still includes the shell body, and the both ends of shell body pass through flange joint with the coal breakage pipe respectively, connecting ring seat, honeycomb duct and power take off gear all set up in the inner chamber of shell body to the inner wall of shell body is located to the fixed cover of connecting ring seat.

Foretell stifled coal breakage pipe assembly is prevented to gravity flow, install clear shovel subassembly on the inner wall of honeycomb duct, clear shovel subassembly is including helping the push rod and clear shovel blade, help the push rod to set up in the inner wall of honeycomb duct along the axial, clear shovel blade is the crooked arc blade of orientation center pin to clear one side of shovel blade is installed on helping the push rod, and clear shovel blade's opposite side is provided with clear shovel domaticly, and clear shovel domatic end pastes with the honeycomb duct inner wall and touches.

In the self-flow anti-blocking coal dropping pipe assembly, the push-aid rod is provided with the cleaning blade at the material receiving end and the material feeding end of the guide pipe respectively, wherein the length of the cleaning blade at the material receiving end of the guide pipe is less than that of the cleaning blade at the material feeding end of the guide pipe, and the width of the cleaning blade at the material receiving end of the guide pipe is greater than that of the cleaning blade at the material feeding end of the guide pipe.

In the self-flowing anti-blocking coal dropping pipe assembly, the surfaces of the inner wall of the guide pipe, the spiral guide vane and the cleaning and shoveling vane are all coated with ceramic coatings

The invention has the following beneficial effects:

1. the self-flowing anti-blocking coal dropping pipe assembly is characterized in that a flow guide pipe is arranged at a position where a coal dropping pipe is easy to block, spiral flow guide blades spirally wound from a material facing end to a material feeding end are arranged on the inner wall of the flow guide pipe at intervals, on one hand, the spiral flow guide blades are arranged close to the inner wall of the flow guide pipe, and the flow guide blades do not extend to the middle of the flow guide pipe, so that the flow guide pipe has a large effective flow diameter.

2. Meanwhile, the tail end of the guide vane forms a thin crushing blade edge, the crushing blade edge faces the material facing end of the guide pipe, when pulverized coal falls smoothly without being blocked, the pulverized coal directly impacts the crushing blade edge, and the crushing blade edge crushes the agglomerated pulverized coal. When the pulverized coal is blocked and difficult to fall, the crushing blade rotates along with the flow guide pipe to transversely cut the blocked pulverized coal, so that the coal blocks which originally cause blockage are broken, the blocked pulverized coal is driven to rotate by the flow guide blades, and smooth falling is realized.

3. The outer wall of the flow guide pipe is in transmission connection with the motor through the gear ring, when the pulverized coal is seriously blocked, the starting motor can drive the flow guide vanes to rotate, and the pulverized coal in the coal breakage pipe is dredged by external force.

4. The cleaning shovel blade is in an inward-bent arc shape, the tail end of the cleaning shovel blade is directly attached to the inner wall of the coal dropping pipe, the cleaning shovel blade rotates along with the flow guide pipe, the inner wall of the coal dropping pipe can be periodically scraped, the arc-shaped blade has elasticity, the slope surface at the tail end of the cleaning shovel blade can provide large force when the cleaning shovel blade rotates, pulverized coal on the inner wall of the coal dropping pipe is removed, and accordingly the pulverized coal scraped under the action of gravity is jointly conveyed downwards along with falling pulverized coal.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is a first structural schematic diagram of a spiral guide vane.

Fig. 4 is a structural schematic diagram of a spiral guide vane.

Fig. 5 is a schematic structural diagram of the present invention after the outer case is installed.

Fig. 6 is a schematic structural diagram of the transmission mechanism.

Fig. 7 is a schematic illustration of the construction of the present invention after installation of the blade assembly.

Fig. 8 is a schematic view of the construction of the blade assembly.

The reference numbers in the figures illustrate: 1-coal dropping pipe, 2-honeycomb duct, 3-connecting ring seat, 4-spiral guide vane, 5-crushing blade, 6-outer shell, 7-motor, 8-speed reducer, 9-power output gear, 10-transmission gear ring, 11-push rod, 12-shovel blade and 13-shovel slope.

Detailed Description

In order to make the technical purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments.