CN215808531U

CN215808531U - Heat-insulation rear arch wall body for low-calorific-value garbage incinerator

Info

Publication number: CN215808531U
Application number: CN202121931319.8U
Authority: CN
Inventors: 董学樊; 袁进涛; 泮依婷; 吴春芳
Original assignee: HANGZHOU NEW CENTURY ENERGY ENVIRONMENTAL PROTECTION ENGINEERING CO LTD
Current assignee: HANGZHOU NEW CENTURY ENERGY ENVIRONMENTAL PROTECTION ENGINEERING CO LTD
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-02-11
Anticipated expiration: 2031-08-17

Abstract

The utility model relates to the field of environmental protection. The purpose provides the thermal-insulated back arch wall body suitable for low calorific value msw incineration, and the device should have simple to operate, long service life's characteristics. The technical scheme is as follows: a thermal insulation rear arch wall body for a low-calorific-value garbage incinerator is characterized in that: the device comprises a pull rod, a plurality of self-locking pull hooks, a plurality of anchoring bricks, a refractory castable and a heat insulation layer, wherein the two ends of the pull rod are connected with a front steel frame beam and a rear steel frame beam, the plurality of self-locking pull hooks are arranged along the length direction of the pull rod and are respectively matched with the pull rod in a hooking and binding mode, the anchoring bricks are fixed by the self-locking pull hooks in a clamping and binding mode one by one, the refractory castable is integrally fixed among the anchoring bricks, and the heat insulation layer covers the outer surface of the refractory castable.

Description

Heat-insulation rear arch wall body for low-calorific-value garbage incinerator

Technical Field

The utility model relates to the field of environmental protection, in particular to a special wall structure for environment-friendly equipment such as garbage power generation and incineration.

Background

In the field of grate waste incineration boilers, a front arch and a rear arch are generally required to be designed, the front arch section preheats and dries the waste so as to prepare for combustion, and the rear arch section can fully combust the waste. Generally, the rear arch section has a longer stroke, so that the garbage can stay on the grate for a sufficient time to burn out. According to different heat values of garbage, the rear arch is roughly divided into three types, the first type is a water-cooled rear arch, and a water-cooled wall extends to a rear wall towards the rear of the furnace; the second one is water-cooled rear arch matched with heat-insulated rear arch, the front section is water-cooled rear arch, and the rear section is heat-insulated rear arch; the third is a heat insulation rear arch which directly extends to the rear wall from the partition wall header, and the middle of the rear arch is a heat insulation wall body. The heat insulation wall body is roughly divided into three layers from inside to outside, and the first layer is made of high-temperature-resistant and corrosion-resistant refractory materials; the second layer is made of heat insulation material with heat insulation function; the third layer is also the outermost layer of the steel guard plate shell. When the heat value of the garbage is lower, the water-cooling rear arch can absorb heat quickly to reduce the temperature of the hearth quickly, so that the garbage can not be combusted fully, and an adiabatic rear arch structure or a water-cooling and adiabatic rear arch structure can be adopted frequently.

Therefore, how to provide a wall structure which is convenient and quick to construct, can well absorb thermal expansion caused by cold and hot operation of a boiler and has economic benefits is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide the heat-insulating rear arch wall body suitable for low-calorific-value waste incineration, and the device has the characteristics of convenience in installation and long service life.

The technical scheme of the utility model is as follows:

a thermal insulation rear arch wall body for a low-calorific-value garbage incinerator is characterized in that: the device comprises a pull rod, a plurality of self-locking pull hooks, a plurality of anchoring bricks, a refractory castable and a heat insulation layer, wherein the two ends of the pull rod are connected with a front steel frame beam and a rear steel frame beam, the plurality of self-locking pull hooks are arranged along the length direction of the pull rod and are respectively matched with the pull rod in a hooking and binding mode, the anchoring bricks are fixed by the self-locking pull hooks in a clamping and binding mode one by one, the refractory castable is integrally fixed among the anchoring bricks, and the heat insulation layer covers the outer surface of the refractory castable.

The anchoring brick is a revolving body with a plurality of wavy grooves, and the casting material is embedded and fixed with the wavy grooves through casting.

The self-locking draw hook comprises two draw hook bodies which are symmetrically arranged and are hinged, and each draw hook body is formed by two hooks of which the tail parts are connected into a whole through a cross rod; two planes respectively formed by the central lines of the two hooks are parallel to each other and are perpendicular to the axis of the cross rod; and each draw hook body is respectively provided with a pin hole matched with the pin shaft, so that the two draw hook bodies are hinged into a self-locking draw hook.

The neck of the anchoring brick is provided with two hanging points formed by planes which are symmetrically arranged and are parallel to each other; and the two cross rods of the self-locking draw hook are embedded with the two hanging points.

Furthermore, each pull rod is provided with a plurality of pull plates for pulling the pull rod; the top end of the pulling plate is welded with the supporting beam, and the bottom of the pulling plate is provided with a through hole for inserting the pulling rod; to prevent the tension rod from deforming under stress.

The utility model has the beneficial effects that: the provided heat-insulating rear arch wall body can move towards a plurality of directions under the state of expansion with heat and contraction with cold so as to absorb thermal expansion, thereby avoiding the situations that the wall body cracks and the service life of the furnace wall is influenced due to stress generated by expansion.

The device is mainly used in environment-friendly equipment such as garbage power generation and garbage incineration, is convenient and quick to construct on site, can be used for a long time, and can effectively avoid the excessive internal stress generated by the wall body of the incinerator in a hot-state operation state, thereby prolonging the service life of the wall body, greatly reducing the overhaul frequency and cost of the boiler, and overcoming the defect of large-area pouring of the wall body of the garbage incineration boiler in the existing garbage power generation equipment.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention.

Fig. 2 is a schematic top view of an embodiment of the present invention.

Fig. 3 is a schematic view of the anchoring brick according to the embodiment of the utility model.

Fig. 4 is a left enlarged view of the anchoring brick according to the embodiment of the present invention.

Fig. 5 is a schematic view of the self-locking retractor according to the embodiment of the present invention.

Fig. 6 is a schematic bottom view of the self-locking retractor according to the embodiment of the present invention.

FIG. 7 is a schematic diagram of a usage state of the embodiment of the present invention.

Detailed Description

The following will be further described with reference to the embodiments shown in the drawings.

The heat-insulating rear arch wall body for the low-calorific-value garbage incinerator, which is shown in the attached drawing, comprises a refractory castable 1, anchoring bricks 2, self-locking drag hooks 3, a pull rod 4 and a heat-insulating layer 5.

As shown in fig. 1, the refractory castable 1 is fixed by an anchoring member, the anchoring member is hooked and tied on a pull rod 4 by a self-locking drag hook 3, the upper part of the anchoring member is covered by a heat insulation material 5, and two ends of the pull rod 4 are fixed on a front steel frame cross beam 21 and a rear steel frame cross beam 23.

Further, the conventional metal anchor is replaced with an anchor brick 2. The anchoring brick (purchased part) is a rotary part with a plurality of wavy grooves, and the embedding of the poured refractory castable and the grooves can effectively enhance the anchoring effect and ensure that the refractory castable is not easy to fall off after the construction is finished; and the anchoring brick has stronger high-temperature resistance and corrosion resistance, has longer service life than the traditional metal anchoring part and has higher economy than an anticorrosive steel metal anchoring part. The neck of the anchoring brick is provided with a hanging point G (as can be seen from the figure, two planes P which are parallel to each other are symmetrically manufactured on two sides of the rotating part, so that the hanging point is formed), the self-locking draw hook 3 comprises two draw hook bodies which are symmetrically arranged and are hinged, each draw hook body is formed by two hooks 3-1, the tail parts of the two hooks are connected into a whole through a cross rod 3-2 (the length of the cross rod is greater than the diameter of the rotating part); two planes respectively formed by the central lines of the two hooks are parallel to each other and are perpendicular to the axis of the cross rod; each drag hook body is also provided with a pin hole 3-3, and after the pin shaft 3-4 is in splicing fit with the pin hole, the two drag hook bodies are hinged to form the self-locking drag hook. When in use, the hook on each hook body hooks and ties the pull rod above, and the cross rods of the two hooks are clamped and tied at the hanging point on one side of the anchoring brick; when the anchoring bricks are clamped at the hanging points on the two sides of the two symmetrically arranged and hinged drag hook bodies, the anchoring bricks can be automatically locked under the action of the gravity of the anchoring bricks and the refractory castable connected with the anchoring bricks, and the locking capacity is stronger when the gravity in an allowable range is larger; and simultaneously, the anchor bricks are allowed to move towards the left side and the right side of the furnace, so that the displacement generated by the thermal expansion of the refractory castable 1 can be absorbed.

Further, in order to prevent the tension rods 4 from deforming under stress, a plurality of pull plates 24 (two pull plates are shown in the figure) are arranged on each tension rod to pull the tension rods, the top ends of the pull plates are connected with the supporting beams 22 in a welding mode (the supporting beams are located above the tension rods, the two ends of the supporting beams are also respectively fixed on the front steel frame cross beam 21 and the rear steel frame cross beam 23), the bottoms of the pull plates are provided with through holes, and the tension rods are inserted into the through holes.

The heat-insulating layer preferably adopts a conventional aluminum silicate fiber felt.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thermal insulation rear arch wall body for a low-calorific-value garbage incinerator is characterized in that: the device comprises a pull rod (4) with two ends connected with a front steel frame beam and a rear steel frame beam, a plurality of self-locking draw hooks (3) which are arranged along the length direction of the pull rod and connected with the pull rod, a plurality of anchoring bricks (2) which are fixed by the self-locking draw hooks in a clamping and binding mode one by one, a refractory castable (1) which is integrally fixed among the anchoring bricks, and a heat preservation layer (5) which covers the outer surface of the refractory castable.

2. The heat-insulated rear arch wall for a low heating value garbage incinerator according to claim 1, wherein: the anchoring brick is a revolving body with a plurality of wavy grooves, and the casting material is embedded and fixed with the wavy grooves through casting.

3. The heat-insulating rear arch wall for a low heating value garbage incinerator according to claim 2, wherein: the self-locking draw hook comprises two draw hook bodies which are symmetrically arranged and are hinged, and each draw hook body is formed by two hooks (3-1) which are connected into a whole through a cross rod at the tail part; two planes respectively formed by the central lines of the two hooks are parallel to each other and are perpendicular to the axis of the cross rod; each draw hook body is also provided with a pin hole (3-2) matched with the pin shaft (3-3), so that the two draw hook bodies are hinged into a self-locking draw hook.

4. A heat-insulating rear arch wall for a low heating value garbage incinerator according to claim 3 wherein: the neck of the anchoring brick is provided with hanging points (G) formed by planes (P) which are symmetrically arranged and are parallel to each other; two cross rods of the self-locking drag hook are embedded with the two hanging points.

5. The heat-insulated rear arch wall for a low heating value garbage incinerator according to claim 4, wherein: each pull rod is provided with a plurality of pull plates (24) for pulling the pull rod; the top end of the pulling plate is welded with the supporting beam (22), and the bottom of the pulling plate is provided with a through hole for inserting the pulling rod; to prevent the tension rod from deforming under stress.