Coal transport trestle

Abstract

The present invention relates to the field of coal power production equipment, and discloses a coal conveying trestle, the coal conveying trestle comprising a conveying space enclosed by an insulating top plate (100), an insulating side plate (200) and a coal conveying bottom plate (300), the insulating side plates being vertically arranged on the coal conveying bottom plate, the insulating top plate being connected to the top end of the insulating side plates, wherein the insulating top plate and the insulating side plates both comprise an insulating structure, the insulating structure comprising a sandwich insulating layer, a plurality of purlins (120) and a support plate (130), the plurality of purlins being laid at intervals on the inner side of the sandwich insulating layer along the extension direction of the conveying space, the support plate being connected to the side of the purlin away from the sandwich insulating layer to isolate the sandwich insulating layer from the conveying space. The present invention avoids the safety hazard of coal dust infiltrating into the sandwich insulating layer and accumulating due to the long-term operation of the coal conveying belt, thereby causing the accumulated dust on the coal conveying trestle to spontaneously combust.

Description

Technical Field

[0001] The invention relates to the field of coal power production equipment, and in particular to a coal conveying trestle. Background Art

[0002] Coal conveyor trestles are common construction facilities in the coal mine and power industries. Most coal conveyor trestles are enclosed with steel structures and insulation. Traditional insulation closures are laid in layers on the steel, taking into account both the appearance and insulation of the trestles. The design and construction of the trestles are to splice the outer insulation of the trestles with formed color steel plates, and the insulation of the trestles is laid on the inside of the steel color plates. After the insulation cotton is installed, it is covered with a film and insulation iron sheet.

[0003] Because the insulation cotton on the inside of the trestle is not tightly compacted, there are gaps in the splicing of the inner insulation iron sheet, and the insulation is set on the side of the coal conveying channel inside the steel section, the long-term operation of the trestle to transport coal causes coal dust to enter the interior of the insulation iron sheet cover through the splicing gaps, mix into the insulation cotton and accumulate in the space between the insulation iron sheet and the insulation cotton. The long-term accumulation of coal ash may cause spontaneous combustion inside the trestle, or even burn the coal conveying trestle, causing production safety hazards. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned problems existing in the prior art and to provide a coal conveying trestle which can effectively prevent the conveyed coal dust from accumulating in the insulation part while conveying and insulating the coal.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a coal conveying trestle, which includes a conveying space enclosed by an insulating top plate, insulating side plates and a coal conveying bottom plate, the insulating side plates are vertically arranged on the coal conveying bottom plate, and the insulating top plate is connected to the top end of the insulating side plates, wherein the insulating top plate and the insulating side plates both include an insulating structure, and the insulating structure includes a sandwich insulation layer, a plurality of purlins and a support plate, a plurality of the purlins are laid at intervals on the inner side of the sandwich insulation layer along the extension direction of the conveying space, and the support plate is connected to the side of the purlin away from the sandwich insulation layer to isolate the sandwich insulation layer from the conveying space.

[0006] Preferably, the sandwich insulation layer includes insulation cotton and aluminum foil paper laid on the surface of the insulation cotton, and the insulation cotton is fixed to the aluminum foil paper by insulation glue.

[0007] Preferably, the sandwich insulation layer further comprises an external insulation sheet laid on the surface of the aluminum foil, and the external insulation sheet located on the side of the sandwich insulation layer facing the purlin is fixed to the purlin via fasteners.

[0008] Preferably, the purlin is C-shaped steel.

[0009] Preferably, the support plate comprises a plurality of inner support bars and a fire-resistant layer, wherein the plurality of inner support bars extend in a direction parallel to the purlins and are spaced apart from each other, and the fire-resistant layer is laid on a surface of the support plate facing the conveying space.

[0010] Preferably, the inner support bar is an I-shaped steel.

[0011] Preferably, the coal conveying trestle further comprises a water retaining weir, which is arranged on the coal conveying bottom plate and connected to the inner side wall of the insulation side plate.

[0012] Preferably, the water retaining weir comprises a thermal insulation filling layer and a plastering layer, and the plastering layer is laid on top of the thermal insulation filling layer.

[0013] Preferably, the water retaining weir further comprises a heat-insulating iron sheet, and the heat-insulating iron sheet is fixed to the surface of the heat-insulating filling layer and the plastering layer by heat-insulating glue.

[0014] Preferably, the thermal insulation top layer and the thermal insulation side panels are connected by a sealant.

[0015] Through the above technical scheme, the sandwich insulation layer is arranged on the outside of the support plate, and the coal conveyor trestle is insulated by means of an external sandwich insulation layer. While ensuring the structural stability of the coal conveyor trestle, the sandwich insulation layer and the coal slag dust transported in the trestle are isolated by the support plate and purlins to avoid the coal conveyor belt from running for a long time and causing the coal slag dust to infiltrate into the sandwich insulation layer and accumulate, causing the safety hazard of spontaneous combustion of the accumulated dust on the coal conveyor trestle.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the coal conveying trestle of the present invention.

[0018] Description of Reference Numerals

[0019] 100-insulation top plate, 200-insulation side plate, 111-insulation cotton, 112-aluminum foil,

[0020] 113-external insulation sheet, 120-purlin, 130-support plate, 131-inner support bar, 132-refractory layer, 300-coal conveying bottom plate, 400-water retaining weir, 410-insulation filling layer, 420-plastering layer,

[0021] 430-Insulation iron sheet. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] The present invention provides a coal transport trestle, such as Figure 1 As shown, the coal conveying trestle includes a conveying space enclosed by an insulating top plate 100, an insulating side plate 200 and a coal conveying bottom plate 300, wherein the insulating side plate 200 is vertically arranged on the coal conveying bottom plate 300, and the insulating top plate 100 is connected to the top end of the insulating side plate 200, wherein the insulating top plate 100 and the insulating side plate 200 both include an insulating structure, and the insulating structure includes a sandwich insulation layer, a plurality of purlins 120 and a support plate 130, wherein a plurality of the purlins 120 are laid at intervals on the inner side of the sandwich insulation layer along the extension direction of the conveying space, and the support plate 130 is connected to the side of the purlin 120 away from the sandwich insulation layer to isolate the sandwich insulation layer from the conveying space.

[0024] In the present invention, the conveying space enclosed by the insulating top plate 100, the insulating side plate 200 and the coal conveying bottom plate 300 is used to convey coal. In order to insulate the coal during the conveying process, the insulating top plate 100 and the insulating side plate 200 both include the insulating structure of the external sandwich insulation layer, and the sandwich insulation layer is arranged on the outside of the support plate. The coal conveying trestle is insulated by the external sandwich insulation layer; a plurality of the purlins 120 support the sandwich insulation layer while the other side is fixed to the support plate 130. While ensuring the stability of the coal conveying trestle structure, the conveying space enclosed by the support plate 130 and the coal conveying bottom plate 300 is fully enclosed, and the sandwich insulation layer and the coal slag dust in the conveying space are isolated, so as to avoid the coal slag dust from infiltrating into the sandwich insulation layer and accumulating due to the long-term operation of the coal conveying belt, causing the safety hazard of spontaneous combustion of the accumulated dust on the coal conveying trestle. The purlin 120 and the heat-insulating structure are arranged outside the support plate 130 , so that the conveying space is expanded, which brings convenience to on-site inspection and maintenance personnel.

[0025] In one embodiment of the present invention, the sandwich insulation layer includes insulation cotton 111 and aluminum foil 112 laid on the surface of the insulation cotton 111, and the insulation cotton 111 is fixed to the aluminum foil 112 by insulation glue. Specifically, the insulation cotton 111 is preferably glass wool, and the aluminum foil 112 wraps the insulation cotton 111 to prevent coal slag dust from entering and causing safety hazards, and also enhances the insulation effect. Considering the overall deformation and the falling characteristics of the insulation cotton 111, in order to evenly arrange the insulation cotton 111 in the aluminum foil 112 and avoid weakening the insulation effect of some parts of the sandwich insulation layer due to the falling of the insulation cotton, the insulation cotton 111 is fixed to the aluminum foil 112 by insulation glue.

[0026] In addition, the sandwich insulation layer also includes an external insulation sheet 113 laid on the surface of the aluminum foil 112, and the external insulation sheet 113 located on the side of the sandwich insulation layer facing the purlin 120 is fixed to the purlin 120 by fasteners. The external insulation sheet 113 is preferably a high-hardness insulation profile, such as an insulation iron sheet, which can not only play a role in insulation but also provide support for the insulation cotton 111 and the aluminum foil 112. The fasteners can be fasteners of any appropriate form, such as bolts, rivets, and welding nails. Considering the construction conditions during on-site installation, the external insulation sheet 113 is preferably fixed to the purlin 120 by rivets, and the other side of the external insulation sheet 113 is preferably fixed to the aluminum foil 112 and the insulation cotton 111 by an extended rivet disc.

[0027] In order to make the insulation structure evenly stressed and stable, a plurality of purlins 120 are evenly laid on the inner side of the sandwich insulation layer. The purlins 120 can be any suitable supporting profile. To facilitate on-site installation by staff while ensuring stability, the purlins 120 are preferably C-shaped steel.

[0028] In one embodiment of the present invention, the support plate 130 includes a plurality of inner support bars 131 and a refractory layer 132, wherein the plurality of inner support bars 131 extend in a direction parallel to the purlin 120 and are spaced apart from each other, and the refractory layer 132 is laid on the surface of the support plate 130 facing the conveying space. Since the surface of the support plate 130 facing the conveying space is in direct contact with the conveyed coal, the refractory layer 132 protects the coal in the conveying space from being affected by the external temperature during the coal conveying process, and also prevents safety hazards caused by the leakage of coal slag dust. Specifically, the refractory layer 132 can be any appropriate material, such as refractory iron wire or refractory mud.

[0029] Since the purlins 120 are laid at intervals outside the support plate 130, in order to ensure the stability of the support plate structure, steel with larger contact surfaces at both ends is preferably used as internal support inside the support plate 130. In one embodiment of the present invention, the internal support bar 131 is an I-shaped steel.

[0030] In addition, the coal conveying trestle further includes a water retaining weir 400, which is disposed on the coal conveying bottom plate 300 and connected to the inner side wall of the thermal insulation side plate 200. Specifically, the water retaining weir 400 disposed on the coal conveying bottom plate 300 seals the connection between the coal conveying bottom plate 300 and the thermal insulation side plate 200, preventing coal slag dust from accumulating at the bottom corner of the thermal insulation side plate 200 during coal conveying, which is difficult to clean and creates a safety hazard.

[0031] Considering that the existing water retaining structure is often cast with concrete, which increases the weight and cost of the coal conveying trestle, and the insulation board and concrete bonding are prone to cracks and coal slag dust accumulation after long-term use, in one embodiment of the present invention, the water retaining weir 400 includes a thermal insulation filling layer 410 and a plastering layer 420, and the plastering layer 420 is laid on the thermal insulation filling layer 410, which not only reduces the weight and manufacturing cost of the water retaining weir 400, but also ensures the sealing of the gap connecting the thermal insulation side plate 200 and the coal conveying bottom plate 300. Since there is also a corner gap between the top of the water retaining weir 400 and the thermal insulation side plate 200, in order to avoid the penetration of coal slag dust, the plastering layer 420 is laid on the thermal insulation filling layer 410, and the corner gap is sealed with a sealant to prevent coal slag dust from penetrating into the thermal insulation filling layer 410 through the corner gap. The plastering layer 420 is preferably made of a fire-resistant material with good sealing effect, which is fireproof and resistant to water washing and soaking, so as to facilitate flushing, cleaning and washing of the conveying space.

[0032] In addition, the water retaining weir 400 also includes an insulating iron sheet 430, which is fixed to the surface of the insulating filling layer 410 and the plastering layer 420 by insulating glue. While maintaining heat, it ensures that the insulating filling layer 410 is isolated from the coal conveying space to prevent coal slag dust from penetrating into the insulating filling layer 410 and causing safety hazards.

[0033] In one embodiment of the present invention, the thermal insulation top layer 100 and the thermal insulation side panels 200 are connected by a sealant. Specifically, the thermal insulation top layer 100 and the thermal insulation side panels 200 are overlapped at a 90° angle, the inner corner panel of the thermal insulation top layer 100 overlaps the outer corner panel of the thermal insulation side panels 200, and the sealant is applied to the overlap gap.

[0034] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0035] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0036] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A coal handling trestle, characterized in that: The coal conveying trestle comprises a conveying space enclosed by an insulating top plate (100), insulating side plates (200) and a coal conveying bottom plate (300), wherein the insulating side plates (200) are vertically arranged on the coal conveying bottom plate (300), and the insulating top plate (100) is connected to the top end of the insulating side plates (200), wherein the insulating top plate (100) and the insulating side plates (200) both comprise an insulating structure, wherein the insulating structure comprises a sandwich insulating layer, a plurality of purlins (120) and a support plate (130), wherein the plurality of purlins (120) support the sandwich insulating layer while the other side is fixed to the support plate (130). The plurality of purlins (120) are laid at intervals on the inner side of the sandwich insulation layer along the extension direction of the conveying space, and the support plate (130) is connected to the side of the purlin (120) away from the sandwich insulation layer to isolate the sandwich insulation layer from the conveying space; the support plate (130) comprises a plurality of inner support bars (131) and a fire-resistant layer (132), the plurality of inner support bars extend in a direction parallel to the purlin (120) and are arranged at intervals from each other, the fire-resistant layer (132) is laid on the surface of the support plate (130) facing the conveying space, and the inner support bars (131) are I-shaped steel; The sandwich insulation layer comprises insulation cotton (111) and aluminum foil (112) laid on the surface of the insulation cotton (111), and the insulation cotton (111) is fixed to the aluminum foil (112) by insulation glue; The sandwich insulation layer also includes an external insulation sheet (113) laid on the surface of the aluminum foil (112), and the external insulation sheet (113) located on the side of the sandwich insulation layer facing the purlin (120) is fixed to the purlin (120) by means of fasteners.

2. The coal handling trestle according to claim 1, characterized in that: The purlin (120) is C-shaped steel.

3. The coal handling trestle according to claim 1, characterized in that: The coal conveying trestle further comprises a water retaining weir (400), wherein the water retaining weir (400) is arranged on the coal conveying bottom plate (300) and connected to the inner side wall of the heat-insulating side plate (200).

4. The coal handling trestle according to claim 3, characterized in that: The water retaining weir (400) comprises a thermal insulation filling layer (410) and a plastering layer (420), wherein the plastering layer (420) is laid on top of the thermal insulation filling layer (410).

5. The coal handling trestle according to claim 4, characterized in that: The water retaining weir (400) further comprises a heat-insulating iron sheet (430), and the heat-insulating iron sheet (430) is fixed to the surface of the heat-insulating filling layer (410) and the plastering layer (420) by heat-insulating glue.

6. The coal handling trestle according to any one of claims 1 to 5, characterized in that: The thermal insulation top plate (100) and the thermal insulation side plate (200) are connected by means of a sealant.

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