CN110671715A

CN110671715A - Continuous operation reciprocating type stokehole feeding device and method

Info

Publication number: CN110671715A
Application number: CN201911108928.0A
Authority: CN
Inventors: 蔡仕杰; 侯枕云; 刘继勇
Original assignee: Shandong Qi Quan Energy Technology Co Ltd
Current assignee: Shandong Qi Quan Energy Technology Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-01-10

Abstract

The invention discloses a continuous operation reciprocating stokehole feeding device and a method, comprising n reciprocating feeders, wherein the reciprocating feeders do reciprocating motion to realize that fuel is fed into a hearth; the n reciprocating feeders are connected with the controller, so that the reciprocating movement speed of each reciprocating feeder can be independently controlled and adjusted, and the control of the feeding amount and the feeding continuity are realized; the reciprocating feeder at least comprises a reciprocating power source and a reciprocating power source, the reciprocating power source is connected with the controller, and the controller controls the reciprocating power source to further control the reciprocating feeder. The invention solves the problems of material blockage, shaft breakage and the like in a reamer type feeding mode, can completely or partially avoid the damage of fuel, and reduces the crushing cost.

Description

Continuous operation reciprocating type stokehole feeding device and method

Technical Field

The invention belongs to the field of industrial supplies, and particularly relates to a continuous operation reciprocating type stokehole feeding device and method.

Background

The capacity of the biomass direct-fired machine assembling machine is larger and larger, a large amount of agricultural and forestry wastes are transported to a biomass direct-fired power plant to be burned and consumed, the environmental problem is solved, and the income of farmers is increased. Most of agricultural and forestry wastes such as wheat straws, corn stalks, barks and the like are strip-shaped, the biomass direct-fired boiler feeding device basically carries out spiral feeding, and strip-shaped fuel needs to be crushed before entering a furnace so as to be sent to the feeding device. The biomass fuel consumes a large amount of manpower and material resources through a crushing environment, so that the operation cost is increased. Although biomass fuel is crushed, the whole strip-shaped fuel cannot be crushed, and even the biomass fuel has complex components and is often doped with ropes, iron bars and the like, so that accidents such as blockage, shaft breakage and the like often occur at the spiral conveying position after the biomass fuel enters a conveying device, and the continuity of boiler feeding is seriously influenced. When the biomass fuel has high moisture, such accidents are more likely to occur.

The inventor considers that the current clinker auger often has accidents such as blockage, shaft breakage and the like, and is inevitable under the basic characteristics of biomass fuel. In addition, the inventor also thinks that the push plate feeder is inevitably used for pushing materials to the hearth once only in one motion period of the reciprocating motion of the push plate, so that the efficiency of the push plate feeder is lower than that of a packing auger capable of continuously feeding materials.

The prior publications do not describe how to use a push plate feeder for continuous feeding of biomass combustion furnaces.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a continuous operation reciprocating stokehole feeding device and a method thereof aiming at the problems in the prior art, so as to reduce the damage workload as much as possible, solve the problems of safe and reliable material conveying and operation cost reduction.

The technical scheme adopted by the invention for solving the problem is as follows:

a continuous operation reciprocating stokehole feeding device comprises n (n is more than or equal to 1 and is a natural number) push plate feeders, wherein the n reciprocating feeders at least comprise a first reciprocating feeder, a second reciprocating feeder, a third reciprocating feeder, a fourth reciprocating feeder, a fifth reciprocating feeder and a sixth reciprocating feeder, and the reciprocating feeders reciprocate to feed fuel into a hearth;

the n reciprocating feeders are all connected with the controller, so that the movement speed of the push plate of each reciprocating feeder can be independently controlled and adjusted, and the control of the feeding amount and the feeding continuity are realized.

Reciprocating feeder includes push pedal and reciprocal power supply at least, reciprocal power supply is connected the controller, the controller is through control reciprocal power supply and then control the push pedal. The reciprocating power source of independent control can realize diversified controlling, improves pay-off efficiency.

The second technical scheme disclosed by the invention is as follows:

a control method for a continuous operation reciprocating stokehole feeding device is characterized in that in n push plate feeders, a push plate feeder with odd number is a first group of push plate feeders, a push plate feeder with even number is a second group of push plate feeders, and when a push plate of the first group of push plate feeders moves to a hearth to feed, a push plate of the second group of push plate feeders moves in a direction opposite to the hearth; the first group of push plate feeders and the second group of push plate feeders move in a staggered manner to continuously feed.

The third technical scheme disclosed by the invention is as follows:

a control method for a continuous operation reciprocating stokehole feeding device is characterized in that when n is an even number, push plate feeders from 1 to n/2 in the n push plate feeders are a first group of push plate feeders, and push plate feeders from n/2+1 to n are a second group of push plate feeders; when n is an odd number, the push plate feeders numbered from 1 to (n +1)/2 among the n push plate feeders are a first group of push plate feeders, and the push plate feeders numbered from (n +1)/2+1 to n are a second group of push plate feeders.

When the push plate of the first group of push plate feeders moves towards the hearth to feed, the push plate of the second group of push plate feeders moves in the direction opposite to the hearth; the first group of push plate feeders and the second group of push plate feeders move in a staggered manner to continuously feed.

The fourth technical scheme disclosed by the invention is as follows:

a control method for continuously operating a reciprocating stokehole feeding device is characterized in that the push plate movement periods of n push plate feeders have delay of t1 in sequence, and if the movement period of each push plate feeder is t, t is nt 1; after biomass fuel is pushed into the hearth by the push plate of the first push plate feeder, biomass fuel is pushed into the hearth by the push plate of the secondary push plate feeder after t1 time, and by analogy, after biomass fuel is pushed into the hearth by the push plate of the nth push plate feeder for t1 time, biomass fuel is pushed into the hearth by the push plate of the first push plate feeder, and the circulation is reciprocating.

The invention has the beneficial effects that:

1. the push plate feeding device is formed by the push plate feeding machine, so that the problems of material blockage, shaft breakage and the like easily caused by a feeding auger are solved, the fuel can be completely or partially prevented from being damaged, and the crushing cost is reduced.

2. According to the push plate feeding device, the feeding efficiency of the push plate feeding machine is improved by adopting various means, and the problem of efficiency reduction caused by single movement of the push plate feeding machine is solved.

Meanwhile, the scheme of continuously feeding by using the push plate feeder is realized through a control mechanism.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a schematic view of a scheme of example 1,

FIG. 2 is a schematic diagram of the scheme of example 2.

Wherein, 1, push pedal feeder, 2, furnace.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the following embodiments are described with reference to the accompanying drawings and practical usage.

Example 1

A reciprocating stokehole feeding device comprises 8 push plate feeders, wherein push plates of the push plate feeders reciprocate to realize that fuel is fed into a hearth;

8 push pedal feeders all connect the controller to make the velocity of motion of the push pedal of every push pedal feeder can be controlled and adjusted alone, control and the continuity control of feeding in order to realize the feeding volume.

The push plate feeder at least comprises a push plate and a reciprocating power source, the reciprocating power source is connected with the controller, and the controller controls the push plate by controlling the reciprocating power source.

Preferably, 8 push pedal feeders are the linear array, and 8 push pedal feeders all are located before the furnace. That is, 8 push pedal feeders are arranged before furnace in a word, and 8 push pedal feeders all are perpendicular to furnace.

Preferably, a partition plate is arranged between two adjacent push plate feeding machines.

As shown in fig. 1, in the present embodiment, 8 push plate feeders are provided, and among the 8 push plate feeders, the numbers are respectively No. 1 machine, No. 2 machine, No. 3 machine, No. 4 machine, No. 5 machine, No. 6 machine, No. 7 machine and No. 8 machine, and the numbers from No. 1 machine to No. 8 machine are arranged in front of the furnace in a straight line.

In this embodiment, the furnace is a biomass combustion furnace, and has at least a furnace body and an inlet, and the inlet has at least a width for accommodating a unit formed by aligning No. 1 to No. 8 machines.

In the operation process of this embodiment, among the 8 push plate feeders, the odd numbered push plate feeders are a first group of push plate feeders, that is, the 1 st, 3 rd, 5 th and 7 th machines are first group of push plate feeders, and the even numbered push plate feeders are a second group of push plate feeders, that is, the 2 nd, 4 th, 6 th and 8 th machines are second group of push plate feeders, and when the push plates of the first group of push plate feeders move to the furnace for feeding, the push plates of the second group of push plate feeders move in a direction opposite to the furnace; the first group of push plate feeders and the second group of push plate feeders move in a staggered manner to continuously feed.

In this embodiment, first group's push pedal feeder with the continuous pay-off of second group's push pedal feeder can effectively be solved because adopt the easy efficiency decline problem that produces of push pedal feeder, and the push pedal feeder can avoid adopting the quick-witted problem of blocking that the flood dragon leads to easily again.

Further, in this embodiment, the reciprocating power source is a hydraulic power source, and the controller is a PLC.

Example 2

The difference between the embodiment 2 and the embodiment 1 is that in the

embodiment

2, 8 push plate feeders are arranged, and in the 8 push plate feeders, the numbers are respectively 1 machine, 2 machine, 3 machine, 4 machine, 5 machine, 6 machine, 7 machine and 8 machine, the numbers of 1 machine, 2 machine, 3 machine, 4 machine, 5 machine, 6 machine, 7 machine and 8 machine are arranged in sequence, and the numbers of 1 machine, 3 machine, 5 machine and 7 machine are defined as a first group of push plate feeders, and the numbers of 2 machine, 4 machine, 6 machine and 8 machine are a second group of push plate feeders, wherein the numbers of 1 machine, 3 machine, 5 machine and 7 machine are obliquely arranged, specifically, the central axis of the push plate feeder is obliquely arranged at 45 degrees to the hearth inlet, and the numbers of 2 machine, 4 machine, 6 machine and 8 machine are vertically arranged and perpendicular to the hearth inlet; one side of the outlet of the No. 1 machine is tightly attached to the outlet of the No. 2 machine, one side of the outlet of the No. 3 machine is tightly attached to the outlet of the No. 4 machine, one side of the outlet of the No. 5 machine is tightly attached to the outlet of the No. 6 machine, and one side of the outlet of the No. 7 machine is tightly attached to the outlet of the No. 8 machine.

The working mode of this embodiment is:

the first group of push plate feeders pushes materials, and because the first group of push plate feeders are inclined to the hearth opening, a part of the materials pushed by the first group of push plate feeders are reserved at the hearth inlet, and then the second group of push plate feeders push materials, and simultaneously push the biomass fuel transported by the second group of push plate feeders and the biomass fuel remained by the first group of push plate feeders into the hearth.

Example 3

Example 3 differs from example 1 in that: in embodiment 2, be equipped with 8 push pedal feeders altogether, in 8 push pedal feeders, the serial number is 1 machine, No. 2 machine, No. 3 machine, No. 4 machine, No. 5 machine, No. 6 machine, No. 7 machine and No. 8 machine respectively, and No. 1 machine, No. 2 machine, No. 3 machine, No. 4 machine, No. 5 machine, No. 6 machine, No. 7 machine and No. 8 machine arrange in proper order to its axis all is perpendicular to furnace entry.

The working mode of this embodiment is:

the motion period of the push plate of the machine No. 1 to the machine No. 8 sequentially has a certain time delay, and in the application, the time T of one-time push plate motion is taken as a standard, and the delay time is T/8; after biomass fuel was pushed into furnace to the push pedal of No. 1 machine, then No. 2 machine pushed furnace with biomass fuel behind the T/8, and No. 3 machine pushed furnace with biomass fuel behind the T/4, analogize with this, after No. 8 machine pushed furnace with biomass fuel, No. 1 machine pushed furnace with biomass fuel again behind the T/8, the circulation is reciprocal.

Example 4

When n is an even number, the push plate feeders numbered from 1 to n/2 in the n push plate feeders are a first group of push plate feeders, and the push plate feeders numbered from n/2+1 to n are a second group of push plate feeders; when n is an odd number, the push plate feeders numbered from 1 to (n +1)/2 among the n push plate feeders are a first group of push plate feeders, and the push plate feeders numbered from (n +1)/2+1 to n are a second group of push plate feeders. When the push plate of the first group of push plate feeders moves towards the hearth to feed, the push plate of the second group of push plate feeders moves in the direction opposite to the hearth; the first group of push plate feeders and the second group of push plate feeders move in a staggered manner to continuously feed.

The invention has the beneficial effects that:

reciprocating type feed mode has solved putty, disconnected axle scheduling problem of reamer formula feed mode to can make fuel all avoid the damage, perhaps partly avoid broken, reduce broken cost.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A reciprocating stokehole feeding device is characterized by comprising n reciprocating feeders, wherein push plates of the reciprocating feeders reciprocate to feed fuel into a hearth; the n reciprocating feeders are connected with the controller, so that the movement speed of a push plate of each reciprocating feeder can be independently controlled and adjusted, and the control of the feeding amount and the continuity of feeding are realized; reciprocating feeder includes push pedal and reciprocal power supply at least, reciprocal power supply is connected the controller, the controller is through control reciprocal power supply and then control the push pedal.

2. The reciprocating stokehole feeding device of claim 1, wherein the n reciprocating feeders are arranged in a straight line, and are positioned in front of the hearth.

3. The reciprocating stokehole feeding device of claim 1, wherein the n reciprocating feeders are arranged in a non-linear manner, and are all positioned in front of the hearth.

4. The reciprocating stokehole feeding device as claimed in claim 1, wherein the n reciprocating feeders are arranged and numbered in sequence, the odd numbered reciprocating feeders are arranged obliquely to the hearth entrance, and the even numbered reciprocating feeders are perpendicular to the hearth entrance.

5. The reciprocating stokehole feed device of claim 1, wherein the reciprocating power source is a hydraulic power source.

6. The reciprocating stokehole feeding device of claim 1, wherein the reciprocating feeder is a push plate feeder.

7. The reciprocating stokehole feeding device of claim 1, wherein the controller is a PLC.

8. The control method of the reciprocating stokehole feeding device according to any one of claims 1 to 7, characterized by comprising the following steps:

the n push plate feeders are grouped, wherein the push plate feeders with odd numbers are a first group of push plate feeders, and the push plate feeders with even numbers are a second group of push plate feeders;

9. The control method of the reciprocating stokehole feeding device according to any one of claims 1 to 7, characterized by comprising the following steps:

grouping n push plate feeders, wherein when n is an even number, the push plate feeders numbered from 1 to n/2 are a first group of push plate feeders, and the push plate feeders numbered from n/2+1 to n are a second group of push plate feeders;

when n is an odd number, the push plate feeders numbered from 1 to (n +1)/2 in the n push plate feeders are a first group of push plate feeders, and the push plate feeders numbered from (n +1)/2+1 to n are a second group of push plate feeders;

10. The control method of a continuously operating reciprocating stokehole feeding device according to any one of claims 1 to 7, comprising the steps of: setting the push plate motion cycles of the n push plate feeders to have delay of time t1 in sequence, wherein if the motion cycle of each push plate feeder is t, t is nt 1;

after biomass fuel is pushed into the hearth by the push plate of the first push plate feeder, biomass fuel is pushed into the hearth by the push plate of the secondary push plate feeder after t1 time, and by analogy, after biomass fuel is pushed into the hearth by the push plate of the nth push plate feeder for t1 time, biomass fuel is pushed into the hearth by the push plate of the first push plate feeder, and the circulation is reciprocating.