CN114517114B

CN114517114B - Deslagging mechanism and deslagging method for pyrolysis gasifier

Info

Publication number: CN114517114B
Application number: CN202210176889.3A
Authority: CN
Inventors: 王曙辉; 曾谊晖; 孙益辉; 谢楚雄; 张娜; 龙超; 廖雨佳; 言政
Original assignee: Zunfeng Environmental Protection Technology Co ltd
Current assignee: Zunfeng Environmental Protection Technology Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2023-01-06
Anticipated expiration: 2042-02-25
Also published as: CN114517114A

Abstract

The embodiment of the invention provides a slag discharging mechanism and a slag discharging method for a pyrolysis gasifier, wherein the slag discharging mechanism comprises: the embodiment of the invention drives the closing or opening of the slag discharging door body through the extension or contraction driving mechanism, realizes slag discharging or closing of ash slag in the pyrolysis gasifier, has good adaptability to the volume and the shape of the ash slag, can enable the ash slag in the gasifier to automatically slide out of the gasifier in a very short time, greatly shortens the ash slag discharging time, reduces the influence of the slag discharging process on a flow field in the gasifier and the working strength of operators, ensures the tightness when the pyrolysis gasifier does not discharge slag, simultaneously ensures that the ash slag can be discharged by the pyrolysis gasifier in a time-saving and labor-saving manner, and is more beneficial to improving the stability of reaction in the gasifier.

Description

Slag discharging mechanism and slag discharging method for pyrolysis gasification furnace

Technical Field

The invention relates to the technical field of slag discharge, in particular to a slag discharge mechanism and a slag discharge method for a pyrolysis gasification furnace.

Background

The distributed incineration treatment of urban and rural household garbage is to build several small household garbage cleaning stations according to the distribution characteristic of household garbage, form network and operate in combination to solve the problem of household garbage treatment in the target area.

Compared with large-scale centralized incineration power generation, the distributed household garbage treatment mode has the advantages that emergency landfill and transfer systems do not need to be built, the adjacent avoidance effect can be better overcome, multipoint low-flow discharge is easier to bear by the environment, the investment and operation cost is lower, the material recovery and energy utilization efficiency is higher, and the like. However, the premise of the treatment mode is that the technology of the small household garbage treatment equipment with ultra-low or near zero emission is mature.

Researches show that the domestic garbage is pyrolyzed and gasified under the environments of certain temperature, pressure, oxygen isolation and the like, and then the pyrolysis gas is combusted again or purified to be used as fuel, so that the extremely low and even near-zero pollutant emission level in the domestic garbage treatment process can be realized. This so-called pyrolysis incineration treatment process of household garbage is an important development direction in the future.

The generalized household garbage comprises not only resident household garbage, but also municipal sanitation garbage, greening trimmings, commercial waste and the like, and the garbage contains a large amount of inorganic matters such as sand, dust and the like besides organic matters in the general meaning, so that residues which account for 5-20% of the mass of the original garbage, namely ash residues, are left after incineration, and generally, about 1 ton of the ash residues is generated after 6 tons of household garbage are treated. In order to maintain sustainable operation of the incinerator, ash must be discharged. For the common incinerator adopting direct combustion technology, the ash cavity is directly communicated with the atmosphere and is open, so that the ash can be drawn out at any time. However, for the incineration road adopting the pyrolysis process, the flow field in the furnace needs to be actively controlled to optimize the reaction process, so that the inside and the outside of the incineration furnace cannot be directly communicated for a long time, otherwise, a large amount of pyrolysis reaction with reduction property is converted into oxidation reaction, so that the pyrolysis gasification reaction in the furnace is difficult to be carried out with high quality, the components of pyrolysis gas can be greatly changed, and the combustion reaction after the pyrolysis gas enters the secondary combustion chamber is unstable or even extinguished.

The ash slag is easy to form large and irregular tumor blocks after being calcined at high temperature, and iron wires frequently existing in the garbage are wound, so that equipment such as a screw conveyor is easy to break down, the airtightness in the furnace is not easy to guarantee, manual slag removal is powerful in labor and long in operation time, and the operation stability of the system is reduced.

Therefore, a slag discharging mechanism for a small household garbage pyrolysis gasification furnace is developed, which can not only discharge slag quickly and smoothly and solve the problem of interruption of the pyrolysis gasification reaction of garbage in a hearth caused by the influence of the slag discharging process on the flow field of the hearth, but also reduce the labor intensity of operators, realize automatic or push-button slag discharging, and is necessary for the development of the small household garbage pyrolysis gasification furnace.

Disclosure of Invention

The invention provides a slag discharging mechanism and a slag discharging method for a pyrolysis gasification furnace. The scheme of the invention not only has good adaptability to the volume and the shape of the ash slag, but also can quickly open the slag discharging channel through key operation, so that the ash slag in the furnace can automatically slide out of the furnace in a very short time, thereby greatly shortening the ash slag discharging time, reducing the influence of the slag discharging process on the flow field in the furnace and the working strength of operators, and being beneficial to maintaining the operation stability of a hearth and a secondary combustion chamber.

To solve the above technical problem, the embodiments of the present invention provide the following solutions:

a slag discharge mechanism for a pyrolysis gasifier, comprising:

the slag discharging port is arranged on a slag collecting hopper of the pyrolysis gasification furnace;

the slag discharging door body is arranged at the slag discharging opening; one end of the slag discharging door body is hinged with the slag collecting hopper, and the other end of the slag discharging door body is clamped with the slag collecting hopper;

the pull seat is fixedly connected to the slag discharge door body;

one end of the driving mechanism is rotatably connected with the pull seat, the other end of the driving mechanism is hinged with the slag collecting hopper, and the driving mechanism is used for controlling the opening and closing of the slag discharging door body.

Optionally, the slag discharging mechanism for the pyrolysis gasifier further comprises a mounting seat;

the mounting seat is arranged on the slag collecting hopper and is fixedly provided with a hinge shaft; the end part of the hinge shaft is fixedly connected with the slag discharge door body, so that the slag discharge door body is hinged with the slag collecting hopper.

Optionally, a first sealing groove and a second sealing groove are arranged on the slag discharge door body close to the slag discharge opening;

a first sealing body is arranged in the first sealing groove;

a second sealing body is arranged inside the second sealing groove; the second sealing body is a graphite packing;

a convex ring is arranged on the slag discharge port; the bulge ring is suitable for being in contact fit with the first sealing body and the second sealing body.

Optionally, a pressing plate is arranged between the second sealing body and the groove bottom of the second sealing groove, and a pressing mechanism is arranged on the slag discharge door body.

Optionally, the slag discharging mechanism for the pyrolysis gasifier further includes:

the support is fixedly connected to one end of the slag discharge door body, a clamping jaw rotating shaft penetrates through the support, and a clamping jaw is arranged on the clamping jaw rotating shaft; the clamping jaw is provided with a through hole suitable for the clamping jaw driving shaft to pass through and is suitable for being clamped with the clamping jaw pin; the clamping jaw pin is fixedly connected to one side of the slag discharge port.

Optionally, a sliding groove is formed in the pull seat, a sliding shaft is arranged in the sliding groove, the sliding shaft is rotatably connected with one end of the pull rod, and the other end of the pull rod is rotatably connected with the claw driving shaft.

Optionally, the pull rod includes:

the connecting rod is provided with a forward-rotation thread at one end and a reverse-rotation thread at the other end;

the sliding shaft fork is fastened with one end of the connecting rod, which is provided with a positive thread, in a threaded manner, and a through hole suitable for the sliding shaft to pass through is formed in the sliding shaft fork;

the jaw driving shaft fork is fastened with one end thread of the connecting rod, which is provided with the reverse-rotation thread, and a through hole suitable for the jaw driving shaft to penetrate is formed in the jaw driving shaft fork.

Optionally, the pull rod further comprises:

and the locking nut is fastened with the forward-rotation thread or the backward-rotation thread of the connecting rod.

The invention also provides a slag discharge method for the pyrolysis gasifier, which comprises the following steps:

when the pyrolysis gasifier body starts to discharge slag, the driving mechanism is controlled to contract, the driving mechanism drives the sliding shaft on the pull seat to move towards the open end of the sliding groove, meanwhile, the sliding shaft drives the pull rod and the clamping jaw to drive the axial direction to move close to the pull seat, and the clamping jaw driving shaft drives the clamping jaw to leave the clamping jaw pin on the slag discharge port;

after the sliding shaft moves to the open end of the sliding groove, the driving mechanism is controlled to contract again, and the sliding shaft pulls the pull seat to drive the pull rod and the clamping jaw driving shaft to open the slag discharge door body;

and ash in the pyrolysis gasifier body is discharged through a slag discharge port on the slag collecting hopper.

Optionally, the slag discharging method for the pyrolysis gasifier further includes:

when the pyrolysis gasifier body stops deslagging, the driving mechanism is controlled to extend, and the deslagging door body rotates around the hinge shaft under the action of gravity until the convex ring on the deslagging port is contacted with the first sealing body and the second sealing body on the deslagging door body;

controlling the driving mechanism to extend again to drive the sliding shaft on the pull seat to move close to the fastening end of the sliding groove, driving the pull rod to push the jaw driving shaft by the sliding shaft, and driving the jaw driving shaft to push the jaw to rotate around the jaw rotating shaft by the driving of the pull rod;

after the sliding shaft moves to the fastening end of the sliding groove, the clamping jaw is fastened with the clamping jaw pin on the slag discharge port;

and the slag discharging opening of the slag collecting hopper of the ash slag in the pyrolysis gasifier body is blocked by the slag discharging door body, and the slag discharging of the pyrolysis gasifier body is stopped.

The scheme of the invention at least comprises the following beneficial effects:

the pyrolysis gasifier in the scheme of the invention comprises a pyrolysis gasifier body, an ash cavity, a slag collecting hopper and a slag discharging mechanism, wherein the slag discharging mechanism comprises: the slag discharging device comprises a slag discharging port, a slag discharging door body, a pull seat and a driving mechanism. The scheme of the invention is as follows:

(1) The first sealing body and the second sealing body are arranged between the slag discharging opening and the slag discharging door body, and the pre-tightening force between the first sealing body and the protruding ring of the slag discharging opening and the pre-tightening force between the second sealing body and the protruding ring of the slag discharging opening are adjustable, so that when the pyrolysis gasifier is in a non-slag discharging state, the slag discharging mechanism can well ensure the airtightness in the gasifier;

(2) The action of the driving mechanism can be operated through a key and a control system, so that the slag discharging process of the pyrolysis gasification furnace becomes simple, and the labor intensity of operators is greatly reduced;

(3) In the slag discharging process of the pyrolysis gasifier, the opening of the slag discharging mechanism, the closing of the slag discharging mechanism and the speed of ash slag sliding out of the slag discharging port from the slag collecting hopper are high, the time consumption of the slag discharging process of the pyrolysis gasifier is extremely short, the time for the inside and outside direct connection of the pyrolysis gasifier is greatly shortened, the influence of the ash slag discharging process on the garbage reaction process in the pyrolysis gasifier is reduced, and therefore the stability of the components of the pyrolysis gas in the gasifier is improved.

Drawings

Fig. 1 shows a schematic structural view of a slag discharge mechanism for a pyrolysis-gasification furnace;

FIG. 2 shows a partial enlarged view of the view A in FIG. 1;

FIG. 3 shows a close-up view of region I of FIG. 1;

FIG. 4 shows a cross-sectional schematic view of FIG. 3;

FIG. 5 shows a close-up view of region III in FIG. 2;

FIG. 6 shows a schematic cross-sectional view in the direction C-C of FIG. 5;

fig. 7 shows a partial enlarged view of region II in fig. 2;

FIG. 8 shows an isometric view of the pull cup;

FIG. 9 shows a schematic view of the structure of the tie rod;

FIG. 10 shows a cross-sectional view of the tie rod of FIG. 9 in direction D;

FIG. 11 is a schematic cross-sectional view of the slag discharge door body in the direction B-B in FIG. 2 in a closed state and the claws and the claw pins in a fastened state;

FIG. 12 is a schematic sectional view showing the slag discharge door body in the direction B-B in FIG. 2 in a closed state and the claws and the claw pins in a non-fastened state;

fig. 13 is a schematic cross-sectional view of the slag discharge door body in the direction B-B in fig. 2 in an open state and the claws and the claw pins in a non-fastened state.

Description of reference numerals:

1-pyrolyzing a gasifier body; 2-ash cavity; 3-a slag collecting hopper; 31-a mounting seat; 32-hinge shaft; 4-a slag discharge port; 41-a projecting ring; 42-a jaw pin; 5-a slag discharge door body; 51-a first seal groove; 52-a second seal groove; 53-first seal; 54-a second seal body; 55-pressing plate; 56-a pressing mechanism; 57-support; 58-jaw spindle; 59-a jaw; 510-jaw drive shaft; 6-pulling the base; 61-a sliding groove; 611-open end; 612-a fastening end; 62-a sliding shaft; 63-a pull rod; 631-a connecting rod; 6311-positive thread; 6312-reverse-rotation threads; 632-sliding shaft yoke; 633-jaw drive shaft yoke; 634-a lock nut; 7-a driving mechanism.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Fig. 1 shows a schematic structural diagram of a slag discharge mechanism for a pyrolysis gasifier, and as shown in fig. 1, the present invention provides a slag discharge mechanism for a pyrolysis gasifier, the pyrolysis gasifier includes a pyrolysis gasifier body 1, an ash cavity 2, a slag collection hopper 3 and a slag discharge mechanism, wherein the slag collection hopper 3 is fixedly connected to the pyrolysis gasifier body 1, the ash cavity 2 is disposed inside the slag collection hopper 3, and the slag discharge mechanism includes:

the slag discharging port 4 is arranged on the slag collecting hopper 3 of the pyrolysis gasification furnace;

the slag discharging door body 5 is arranged at the slag discharging port 4, one end of the slag discharging door body 5 is hinged with the slag collecting hopper 3, and the other end of the slag discharging door body 5 is clamped with the slag collecting hopper 3;

the pull seat 6 is fixedly connected to the slag discharge door body 5;

and one end of the driving mechanism 7 is rotatably connected with the pull seat 6, the other end of the driving mechanism 7 is hinged with the slag collecting hopper 3, and the driving mechanism 7 is used for controlling the opening and closing of the slag discharging door body 5.

In this embodiment, the slag discharge mechanism for the pyrolysis gasifier is disposed on the pyrolysis gasifier, and the pyrolysis gasifier specifically includes a pyrolysis gasifier body 1, an ash cavity 2, a slag collection hopper 3, and a slag discharge mechanism, as shown in fig. 1, the slag collection hopper 3 is fixedly connected with the pyrolysis gasifier body 1, the inside of the slag collection hopper 3 is a cavity structure, and the ash cavity 2 is disposed inside the slag collection hopper 3;

the slag discharging mechanism comprises a slag discharging port 4, a slag discharging door body 5, a pull seat 6 and a driving mechanism 7, wherein the slag discharging port 4 is arranged on the slag collecting hopper 3, and the size of the slag discharging port 4 is large enough, namely the size of the slag discharging port 4 is matched with that of the slag collecting hopper 3; the slag discharging door body 5 is arranged at the slag discharging port 4, one end of the slag discharging door body 5 is hinged with the slag collecting hopper 3 through a hinge shaft 32, the other end of the slag discharging door body 5 is clamped with the slag collecting hopper 3, meanwhile, a pull seat 6 is fixedly connected to a door plate on one side of the slag discharging door body 5, which is far away from the slag collecting hopper 3, the pull seat 6 is rotatably connected with one end of a driving mechanism 7, and the other end of the driving mechanism 7 is hinged with the slag collecting hopper 3; the driving mechanism 7 is used for controlling the opening and closing of the slag discharge door body 5, and specifically, the driving mechanism 7 can drive the slag discharge door body 5 to be closed or opened through contraction or extension of the driving mechanism 7, so that slag discharge or sealing of ash slag generated by the pyrolysis gasifier body 1 is realized; the embodiment of the invention has good adaptability to the volume and the shape of the ash slag, can ensure that the ash slag in the furnace can automatically slide out of the furnace in a very short time, greatly shortens the ash slag discharge time, reduces the influence of the slag discharge process on the flow field in the furnace and the working strength of operators, ensures the sealing property of the pyrolysis gasification furnace when the slag is not discharged, ensures that the ash slag can be discharged in a time-saving and labor-saving manner when the pyrolysis gasification furnace discharges the slag, and is more beneficial to improving the stability of the reaction in the furnace.

In an optional embodiment of the present invention, the slag discharging mechanism for the pyrolysis gasifier further includes a mounting seat 31;

the mounting seat 31 is arranged on the slag collecting hopper 3 and is fixed with a hinge shaft 32; the end part of the hinge shaft 32 is fixedly connected with the slag discharge door body 5, so that the slag discharge door body 5 is hinged with the slag collecting hopper 3.

Fig. 2 shows a partial enlarged view of the view angle from a in fig. 1, as shown in fig. 2, in this embodiment, the driving mechanism 7 is connected with the slag discharge door body 5 through the pull seat 6, and specifically, the pull seat 6 is disposed on the door panel of the slag discharge door body 5 on the side away from the slag collecting hopper 3; at least one mounting seat 31 is fixedly connected to the slag collecting hopper 3, the number of the mounting seats 31 can be determined according to actual requirements, the limiting is not limited in the application, the mounting seat 31 is fixedly connected with one end of a hinge shaft 32, the other end of the hinge shaft 32 is fixedly connected with the slag discharging door body 5, the at least one mounting seat 31 and the hinge shaft 32 which are arranged on the slag collecting hopper 3 are used for realizing the hinging between the slag discharging door body 5 and the slag collecting hopper 3, and when slag is discharged or stopped to be discharged, the slag discharging door body 5 can be opened or closed by rotating around the hinge shaft 32.

In an optional embodiment of the present invention, a first sealing groove 51 and a second sealing groove 52 are disposed at a position of the slag discharge door body 5 close to the slag discharge port 4;

a first sealing body 53 is provided inside the first seal groove 51;

a second sealing body 54 is arranged in the second sealing groove 52; the second sealing body 54 is a graphite packing;

a projecting ring 41 is arranged on the slag discharging port 4; the protruding ring 41 is adapted to contact the first sealing element 53 and the second sealing element 54.

Fig. 3 is a partial enlarged view of a region I in fig. 1, fig. 4 is a schematic sectional view of fig. 3, and as shown in fig. 3 and fig. 4, in this embodiment, a first sealing groove 51 and a second sealing groove 52 are provided on the side of the slagging door body 5 close to the slagging port 4, as can be seen from the schematic sectional view of fig. 4, a first sealing body 53 is provided inside the first sealing groove 51, a second sealing body 54 is provided inside the second sealing groove 52, and the protruding ring 41 on the slagging port 4 is adapted to contact with the first sealing body 53 and the second sealing body 54, so that the slagging port 4 has good tightness when the slagging door body 5 is closed;

the second sealing body 54 is preferably a graphite packing which is formed by finely weaving various reinforced graphite wires such as reinforcing fibers and metal wires as raw materials, and is suitable for dynamic sealing under high-temperature and high-pressure conditions, and the second sealing body 54 is provided with the graphite packing so that the pyrolysis gasifier has good sealing performance when slag is not discharged.

In an alternative embodiment of the present invention, a pressing plate 55 is disposed between the second sealing body 54 and the bottom of the second sealing groove 52, and a pressing mechanism 56 is disposed on the slag discharge door body 5.

As shown in fig. 3 and 4, in the present embodiment, a pressing plate 55 is disposed between the second sealing body 54 and the groove bottom of the second sealing groove 52, a pressing mechanism 56 is disposed on the slag discharge door body 5, the pressing mechanism 56 is in contact with the pressing plate 55, and a pre-tightening force exists between the pressing mechanism 56 and the pressing plate 55;

the preload force is a force that is applied to the connection between the pressing mechanism 56 and the pressure plate 55 in advance before the connection is subjected to a working load (a pressure generated by the contact between the protruding ring 41 and the second sealing body 54), so as to enhance the reliability and tightness of the connection and prevent gaps or relative slippage between the connecting members after the connection is subjected to the load;

when the second sealing body 54 is damaged, the matching between the second sealing body 54 and the protruding ring 41 is poor, the sealing performance of the ash cavity 2 is poor, the pressing plate 55 can be pushed towards the protruding ring 41 through the pressing mechanism 56, so that the pretightening force between the second sealing body 54 and the protruding ring 41 is in a reasonable range, that is, the second sealing body 54 is pressed on the protruding ring 41, and the sealing performance of the pyrolysis gasifier when slag is not discharged is ensured.

In an optional embodiment of the present invention, the slag discharging mechanism for the pyrolysis gasifier further includes:

the support 57 is fixedly connected to one end of the slag discharge door body 5, a jaw rotating shaft 58 penetrates through the support 57, a jaw 59 is arranged on the jaw rotating shaft 58, and a through hole suitable for the jaw driving shaft 510 to penetrate through is formed in the jaw 59;

one side of the slag discharge port 4 is fixedly connected with a claw pin 42; the jaw pin 42 is adapted to snap-fit with the jaw 59.

As shown in fig. 3 and 4, in the present embodiment, a support 57 is disposed at one end of the slag discharge door body 5, the support 57 is preferably disposed at one end of the slag discharge door body 5 close to the ground, a through hole is disposed on the support 57, and a jaw rotating shaft 58 is disposed on the through hole of the support 57;

fig. 5 is a partial enlarged view of a region III in fig. 2, fig. 6 is a schematic cross-sectional view along direction C-C in fig. 5, as shown in fig. 5 and fig. 6, one of the jaw rotating shafts 58 is provided with a jaw 59, the jaw 59 is provided with two through holes, the through hole of one jaw 59 is provided with the jaw rotating shaft 58, the through hole of the other jaw 59 is provided with a jaw driving shaft 510, the jaw driving shaft 510 is used for driving the jaw 59 to rotate around the jaw rotating shaft 58, further, as shown in fig. 5, the jaw driving shaft 510 is simultaneously provided with a pull rod 63, and the pull rod 63 can rotate around the axis of the jaw driving shaft 510;

in addition, the number of the support seats 57 arranged on the slag discharge door body 5 can be determined according to actual conditions, and the number of the claws 59 is preferably matched with the number of the support seats 57, which is not limited in the application;

as can be seen from fig. 6, when the claw 59 is fastened to the claw pin 42, the slag discharge door 5 is in a closed state, so that a pressing force is formed between the first sealing body 53 and the second sealing body 54 and the protruding ring 41, and the slag discharge door 5 is further clamped to the slag discharge opening 4, so that better sealing performance is achieved; when the slag discharge door body 5 is opened from a closed state, the jaw 59 is driven to rotate around the jaw rotating shaft 58 through the jaw driving shaft 510, so that the jaw 59 and the jaw pin 42 are not fastened any more, and the slag discharge door body 5 and the slag discharge opening 4 are separated from a clamping state.

In an optional embodiment of the present application, a sliding groove 61 is formed on the pull seat 6, a sliding shaft 62 is disposed in the sliding groove 61, the sliding shaft 62 is rotatably connected to one end of a pull rod 63, and the other end of the pull rod 63 is rotatably connected to the jaw driving shaft 510.

Fig. 7 is a partial enlarged view of a region II in fig. 2, fig. 8 is an isometric view of a pull seat, and as shown in fig. 7 and 8, a sliding groove 61 is formed on the pull seat 6 in the embodiment, one end of the sliding groove 61 is a door opening end 611, the other end is a fastening end 612, a sliding shaft 62 is arranged in the sliding groove 61, and the sliding shaft 62 can reciprocate parallel motion between the door opening end 611 and the fastening end 612 in the sliding groove 61;

as shown in fig. 7, a sliding shaft 62 is disposed in the sliding groove 61, the driving mechanism 7 is connected to the sliding shaft 62, and the sliding shaft 62 is fixedly connected to one end of the pull rod 63, wherein the driving mechanism 7 is a rod-shaped structure that can be contracted or extended according to actual requirements, and the effective length of the pull rod 63 can be adjusted according to requirements.

As can be seen from fig. 7, the other end of the pull rod 63 is fixedly connected to the jaw driving shaft 510, and when the driving mechanism 7 drives the sliding shaft 62 in the sliding groove 61 to perform reciprocating parallel motion, the sliding shaft 62 further drives the pull rod 63, so that the jaw driving shaft 510 drives the jaw 59 to rotate around the jaw rotating shaft 58, thereby controlling whether the jaw 59 is fastened to the jaw pin 42.

In an alternative embodiment of the present application, the pull rod 63 includes:

the connecting rod 631 is provided with a forward-rotation thread 6311 at one end and a reverse-rotation thread 6312 at the other end;

the sliding shaft fork 632 is fastened with one end of the connecting rod 631, which is provided with a positive rotation thread 6311, through holes suitable for the sliding shaft 62 to pass through are formed in the sliding shaft fork 632;

the claw driving shaft fork 633 is in threaded fastening with one end of the connecting rod 631, provided with a reverse-rotation thread 6312, and a through hole suitable for the claw driving shaft 510 to penetrate through is formed in the claw driving shaft fork 633.

Further, the pull rod 63 further includes:

a lock nut 634, the lock nut 634 being screw-fastened with the forward rotation thread 6311 or the reverse rotation thread 6312 of the connecting rod 631.

Fig. 9 shows a schematic structural diagram of the pull rod, fig. 10 shows a schematic sectional diagram of the pull rod in the direction D in fig. 9, and as shown in fig. 9 and 10, the pull rod 63 in this embodiment includes a connecting rod 631, a sliding yoke 632, a jaw drive yoke 633 and a lock nut 634;

the two ends of the connecting rod 631 are respectively provided with a forward-rotation thread 6311 and a reverse-rotation thread 6312, it should be noted that the thread directions of the forward-rotation thread 6311 and the reverse-rotation thread 6312 are opposite, and if the forward-rotation thread 6311 is a left-rotation thread, the reverse-rotation thread 6312 is a right-rotation thread, or vice versa; the forward-rotation threads 6311 are matched with the sliding shaft fork 632 to screw-fasten the sliding shaft fork 632 to one end of the connecting rod 631, and the reverse-rotation threads 6312 are matched with the jaw driving shaft fork 633 to screw-fasten the jaw driving shaft fork 633 to the other end of the connecting rod 631; the connecting rod 631 can adjust the effective distance between the two ends of the jaw driving shaft fork 633 and the sliding shaft fork 632 through rotation, so as to adjust the fastening force between the jaw 59 on the jaw driving shaft fork 633 side and the jaw pin 42, and adjust the pressing force of the convex ring 41 on the slag discharge port 4 and the first sealing body 53 and the second sealing body 54 on the slag discharge door body 5;

the sliding shaft fork 632 is used for being matched with the sliding shaft 62 to penetrate through the pull rod 63, the jaw driving shaft fork 633 is used for being matched with the jaw driving shaft 510 to penetrate through the pull rod 63, meanwhile, a locking nut 634 is further screwed on the positive rotation thread 6311 of the connecting rod 631, and pre-tightening force exists between the locking nut 634 and the sliding shaft fork 632;

since the length of the draw bar 63 is adjustable, the lock nut 634 is used to add a pre-load force between the lock nut 634 and the slide yoke 632 when the distance between the slide yoke 632 and the jaw driving yoke 633 is adjusted to a desired value, to prevent the connecting rod 631 from rotating to change the effective length;

it should be noted that the lock nut 634 may also be disposed on one side of the reverse-rotation thread 6312, so as to add a pre-tightening force between the lock nut 634 and the jaw driving shaft fork 633 when the distance between the sliding shaft fork 632 and the jaw driving shaft fork 633 is adjusted to a desired value, so as to prevent the connecting rod 631 from rotating to change the effective length.

The scheme of the invention also provides a slag discharging method for the pyrolysis gasifier, which comprises the following steps:

when the pyrolysis gasifier body 1 starts to discharge slag, the driving mechanism 7 is retracted, the driving mechanism 7 drives the sliding shaft 62 on the pull seat 6 to move towards the open end 611 of the sliding groove 61, meanwhile, the sliding shaft 62 drives the pull rod 63 and the jaw driving shaft 510 to move towards the pull seat 6, and the jaw driving shaft 510 drives the jaw 59 to leave the jaw pin 42 on the slag discharge port 4;

after the sliding shaft 62 moves to the open end 611 of the sliding groove 61, the driving mechanism 7 contracts again, and the sliding shaft 62 pulls the pull seat 6 to drive the pull rod 63 and the claw driving shaft 510 to open the slag discharge door body 5;

and ash in the pyrolysis gasifier body 1 is discharged through a slag discharge port 4 on the slag collecting hopper 3.

Fig. 11 shows a schematic cross-sectional view of the slag discharge door body in the direction B-B in fig. 2 in a closed state and the claws and the claw pins in a fastened state, fig. 12 shows a schematic cross-sectional view of the slag discharge door body in the direction B-B in fig. 2 in a closed state and the claws and the claw pins in a non-fastened state, fig. 13 shows a schematic cross-sectional view of the slag discharge door body in the direction B-B in fig. 2 in an open state and the claws and the claw pins in a non-fastened state, as shown in fig. 11 to 13, the slag discharge door body 5 is in a closed state and the claws 59 and the claw pins 42 are in a fastened state before the pyrolysis gasifier body 1 starts to discharge slag, and here, the closed state of the slag discharge door body 5 and the claws 59 and the claw pins 42 are in a fastened state are explained:

as shown in fig. 11, when the slag discharge door body 5 is in the closed state, the sliding shaft 62 is located at the fastening end 612 in the sliding groove 61, the protruding ring 41 is in contact with the first sealing body 53 and the second sealing body 54, and the claws 59 are fastened with the claw pins 42, so that the slag discharge door body 5 and the slag discharge port 4 are in the closed state;

when the pyrolysis gasifier body 1 starts to discharge slag, the claw 59 and the claw pin 42 are switched from the fastened state to the unfastened state (the slag discharge door body 5 is in the closed state), and here, a process of switching the fastened state of the claw 59 and the claw pin 42 to the unfastened state and switching the slag discharge door body 5 to the closed state is described:

as can be seen from the state shown in fig. 11 to the state shown in fig. 12, the driving mechanism 7 is retracted, and at the same time, the sliding shaft 62 connected to the driving mechanism 7 is driven to move from the fastening end 612 to the open end 611 of the sliding groove 61, because the sliding shaft 62 is inserted into the sliding shaft fork 632 of the pull rod 63, the movement of the sliding shaft 62 in the sliding groove 61 drives the pull rod 63 to move, so that the jaw driving shaft 510 inserted into the jaw driving shaft fork 633 of the pull rod 63 drives the jaw 59 to rotate around the jaw rotating shaft 58, and the fastening force between the jaw 59 and the jaw pin 42 is reduced until the jaw 59 and the jaw pin 42 are converted from the fastening state to the non-fastening state (at this time, the sliding shaft 62 is at the open end 611 of the sliding groove 61);

when the claw 59 and the claw pin 42 are in the non-fastened state, the slag discharge door body 5 is further changed from the closed state to the open state, and here, a process of changing the slag discharge door body 5 from the closed state to the open state will be described:

when the sliding shaft 62 reaches the opening end 611 of the sliding groove 61 from the fastening end 612, the driving mechanism 7 is further contracted, the sliding shaft 62 at the opening end 611 pulls the pull seat 6 to drive the pull rod 63 and the jaw driving shaft 510 to open the slag discharge door body 5, as can be seen from fig. 11 to 13, a jaw rotating shaft 58 is arranged in one through hole on the jaw 59, and a jaw driving shaft 510 is arranged in the other through hole on the jaw 59, because the distance between the two through holes of the jaw 59 is fixed, when the jaw driving shaft 510 is driven, the jaw 59 will rotate around the jaw rotating shaft 58 along with the movement of the jaw driving shaft 510, and when the movement range of the jaw driving shaft 510 exceeds the range of a circle with the jaw rotating shaft 58 as the center and the distance between the two through holes as the radius, the slag discharge door body 5 is opened;

here, the state in which the claw 59 and the claw pin 42 are fastened and the opening state of the slag discharge door body 5 is explained:

as shown in fig. 13, when the slag discharge door body 5 is in the open state, the sliding shaft 62 is at the open end 611 in the sliding groove 61, the protruding ring 41 is not in contact with the first sealing body 53 and the second sealing body 54, and the claws 59 and the claw pins 42 are in the non-fastened state, so that the slag discharge door body 5 and the slag discharge port 4 are in the open state.

In an optional embodiment of the present invention, the slag discharging method for the pyrolysis gasifier further includes:

when the pyrolysis gasifier body 1 stops slagging, the driving mechanism 7 is extended, and the slagging door body 5 rotates around the hinge shaft 32 under the action of gravity until the convex ring 41 on the slagging opening 4 is in contact fit with the first sealing body 53 and the second sealing body 54 on the slagging door body 5;

extending the driving mechanism 7 again to drive the sliding shaft 62 on the pull seat 6 to move towards the fastening end 612 close to the sliding groove 61, wherein the sliding shaft 62 drives the pull rod 63 to push the jaw driving shaft 510, and the jaw driving shaft 510 drives the jaw 59 to rotate around the jaw rotating shaft 58 under the driving of the pull rod 63;

after the sliding shaft 62 moves to the fastening end 612 of the sliding groove 61, the claw 59 is fastened with the claw pin 42 on the slag discharge port 4;

the ash slag in the pyrolysis gasifier body 1 is blocked by the slag discharge door body 5 at the slag discharge port 4 on the slag collecting hopper 3, and the slag discharge of the pyrolysis gasifier body 1 is stopped.

As shown in fig. 11 to 13, in this embodiment, before the pyrolysis gasifier body 1 stops slagging, the claw 59 and the claw pin 42 are in the fastened state and the slagging door body 5 is in the opened state, where the claw 59 and the claw pin 42 are in the fastened state and the slagging door body 5 is in the opened state, which is the same as that described in fig. 13 and is not repeated;

when the pyrolysis gasifier body 1 stops discharging slag, the slag discharge door body 5 is changed from the open state to the closed state (the claw 59 and the claw pin 42 are in the non-fastened state), and here, a process of changing the slag discharge door body 5 from the open state to the closed state will be described:

as can be seen from the state shown in fig. 13 to the state shown in fig. 12, the driving mechanism 7 is extended, and at the same time, the slag discharge door body 5 rotates around the hinge shaft 32 under the action of gravity until the protruding ring 41 on the slag discharge port 4 contacts and is attached to the first sealing body 53 and the second sealing body 54 on the slag discharge door body 5, at which time, the slag discharge door body 5 is changed from the open state to the closed state;

when the slag discharge door body 5 is in the closed state, the claw 59 and the claw pin 42 are further caused to transition from the non-fastened state to the fastened state, and here, a process of transition of the claw 59 and the claw pin 42 to the fastened state will be described:

at this time, the sliding shaft 62 is located at the open end 611 in the sliding groove 61, the driving mechanism 7 is extended again, at this time, the sliding shaft 62 moves from the open end 611 to the fastening end 612, because the sliding shaft 62 is inserted into the sliding shaft fork 632 of the pull rod 63, the movement of the sliding shaft 62 in the sliding groove 61 drives the pull rod 63 to move, so that the jaw driving shaft 510 inserted into the jaw driving shaft fork 633 of the pull rod 63 drives the jaw 59 to rotate around the jaw rotating shaft 58, the fastening force between the jaw 59 and the jaw pin 42 is increased until the jaw 59 and the jaw pin 42 are converted from the non-fastening state to the fastening state, and at this time, the sliding shaft 62 reaches the fastening end 612 in the sliding groove 61;

here, the state in which the slag discharge door body 5 is in the closed state and the claw 59 and the claw pin 42 are in the fastened state is the same as that described in the above fig. 11, and the description is omitted;

it should be noted that the retraction and extension of the driving mechanism 7 can be operated by a key or a control system, and the application is not limited thereto.

The slag discharge mechanism in the embodiment of the invention comprises: a slag discharge port 4, a slag discharge door body 5, a pull seat 6 and a driving mechanism 7; according to the embodiment of the invention, the extension or contraction driving mechanism 7 drives the slag discharging door body 5 to be closed or opened, so that slag discharging or sealing of ash in the pyrolysis gasifier is realized, the slag discharging or sealing device has good adaptability to the volume and the shape of the ash, the ash in the furnace can automatically slide out of the furnace in a very short time, the ash discharging time is greatly shortened, the influence of the slag discharging process on the flow field in the furnace and the working strength of operators are reduced, the tightness of the pyrolysis gasifier when the slag is not discharged is ensured, the ash can be discharged in a time-saving and labor-saving manner when the pyrolysis gasifier discharges the slag, and the stability of the reaction in the furnace is improved.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A slag discharge mechanism for a pyrolysis gasifier, comprising:

the slag discharging port (4) is arranged on the slag collecting hopper (3) of the pyrolysis gasification furnace;

the slag discharge door body (5), the slag discharge door body (5) is arranged at the slag discharge port (4); one end of the slag discharge door body (5) is hinged with the slag collecting hopper (3), and the other end of the slag discharge door body is clamped with the slag collecting hopper (3);

the pull seat (6), the pull seat (6) is fixedly connected to the slag discharge door body (5);

one end of the driving mechanism (7) is rotatably connected with the pull seat (6), and the other end of the driving mechanism (7) is hinged with the slag collecting hopper (3); the driving mechanism (7) is used for controlling the opening and closing of the slag discharge door body (5);

wherein, still include:

the support (57) is fixedly connected to one end of the slag discharge door body (5), a jaw rotating shaft (58) penetrates through the support (57), and a jaw (59) is arranged on the jaw rotating shaft (58); the jaw (59) is provided with a through hole for the jaw driving shaft (510) to pass through and is suitable for being clamped with the jaw pin (42); the jaw pin (42) is fixedly connected to one side of the slag discharge port (4);

the pull seat (6) is provided with a sliding groove (61), a sliding shaft (62) is arranged in the sliding groove (61), the sliding shaft (62) is rotatably connected with one end of a pull rod (63), and the other end of the pull rod (63) is rotatably connected with the jaw driving shaft (510);

a sliding groove (61) is formed in the pull seat (6), a sliding shaft (62) is arranged in the sliding groove (61), the sliding shaft (62) is rotatably connected with one end of a pull rod (63), and the other end of the pull rod (63) is rotatably connected with the jaw driving shaft (510);

wherein the tie rod (63) comprises:

the connecting rod (631) is provided with a forward-rotation thread (6311) at one end and a reverse-rotation thread (6312) at the other end;

the sliding shaft fork (632) is in threaded fastening with one end, provided with a positive rotation thread (6311), of the connecting rod (631), and a through hole suitable for the sliding shaft (62) to pass through is formed in the sliding shaft fork (632);

the jaw driving shaft fork (633), the jaw driving shaft fork (633) is in threaded fastening with one end, provided with the counter-rotating threads (6312), of the connecting rod (631), and a through hole suitable for the jaw driving shaft (510) to penetrate is formed in the jaw driving shaft fork (633).

2. The slag discharge mechanism for a pyrolysis gasifier according to claim 1, further comprising a mounting seat (31);

the mounting seat (31) is arranged on the slag collecting hopper (3) and is fixedly provided with a hinge shaft (32); the end part of the hinge shaft (32) is fixedly connected with the slag discharge door body (5), so that the slag discharge door body (5) is hinged with the slag collecting hopper (3).

3. The slag discharge mechanism for the pyrolysis gasifier according to claim 1, wherein a first sealing groove (51) and a second sealing groove (52) are arranged on the slag discharge door body (5) near the slag discharge port (4);

a first sealing body (53) is arranged in the first sealing groove (51);

a second sealing body (54) is arranged in the second sealing groove (52); the second sealing body (54) is a graphite packing;

a projecting ring (41) is arranged on the slag discharging port (4); the protruding ring (41) is suitable for being in contact joint with the first sealing body (53) and the second sealing body (54).

4. The slag discharge mechanism for the pyrolysis gasifier according to claim 3, wherein a pressure plate (55) is provided between the second sealing body (54) and the bottom of the second sealing groove (52), and a pressing mechanism (56) is provided on the slag discharge door body (5).

5. The slag discharge mechanism for a pyrolysis gasifier according to claim 1, wherein the tie (63) further includes:

a lock nut (634), the lock nut (634) being screw-fastened with the forward-rotation thread (6311) or the reverse-rotation thread (6312) of the connecting rod (631).

6. A slag discharging method for a pyrolysis gasifier, applied to the slag discharging mechanism for the pyrolysis gasifier of any one of claims 1 to 5, the method comprising:

when the pyrolysis gasifier body (1) starts to discharge slag, the driving mechanism (7) is controlled to contract, the driving mechanism (7) drives the sliding shaft (62) on the pull seat (6) to move towards the open end (611) of the sliding groove (61), meanwhile, the sliding shaft (62) drives the pull rod (63) and the jaw driving shaft (510) to move towards the direction close to the pull seat (6), and the jaw driving shaft (510) drives the jaw (59) to leave the jaw pin (42) on the slag discharge port (4);

after the sliding shaft (62) moves to the door opening end (611) of the sliding groove (61), the driving mechanism (7) is controlled to contract again, the sliding shaft (62) pulls the pull seat (6) to drive the pull rod (63) and the claw driving shaft (510) to open the slag discharge door body (5);

and ash in the pyrolysis gasifier body (1) is discharged through a slag discharge port (4) on the slag collecting hopper (3).

7. The slag discharging method for a pyrolysis gasifier according to claim 6, further comprising:

when the pyrolysis gasifier body (1) stops deslagging, the driving mechanism (7) is controlled to extend, and the deslagging door body (5) rotates around the hinge shaft (32) under the action of gravity until the convex ring (41) on the deslagging port (4) is in contact with the first sealing body (53) and the second sealing body (54) on the deslagging door body (5);

the driving mechanism (7) is controlled to extend again, the sliding shaft (62) on the pull seat (6) is driven to move towards the fastening end (612) close to the sliding groove (61), the sliding shaft (62) drives the pull rod (63) to push the jaw driving shaft (510), and the jaw driving shaft (510) drives the jaw (59) to rotate around the jaw rotating shaft (58) under the driving of the pull rod (63);

after the sliding shaft (62) moves to a fastening end (612) of the sliding groove (61), the claw (59) is fastened with a claw pin (42) on the slag discharge port (4);

the ash in the pyrolysis gasifier body (1) is blocked by the slag discharge door body (5) at the slag discharge opening (4) on the slag collecting hopper (3), and the slag discharge of the pyrolysis gasifier body (1) is stopped.