CN219905952U - Fusion device of guide chute and curve chute - Google Patents

Abstract

The utility model discloses a fusion device of a guide chute and a curve chute, which comprises a numerical control double-seal bow-type guide chute system device and a curve blanking chute system device; the numerical control double-seal bow-type guide chute system devices are at least two, and the curve blanking chute system devices are positioned between two adjacent numerical control double-seal bow-type guide chute system devices; the numerical control double-seal bow-type guide chute system device comprises a conveying belt conveyor and a guide chute surrounding the conveying belt conveyor; the guide chute is arranged above the conveying belt conveyor; the curve blanking chute system device comprises a curve arc-shaped collecting cover, a curve chute and a receiving hopper which are integrally formed or assembled from top to bottom, wherein the curve arc-shaped collecting cover is positioned above a conveying belt conveyor of the numerical control double-seal bow-shaped material guiding chute system device. The curve blanking chute and the material receiving spoon are organically combined, so that the induced air quantity is reduced, dust in a wind field is reduced from the source, and the comprehensive dust treatment capability is improved.

Description

Fusion device of guide chute and curve chute

Technical Field

The utility model relates to a fusion device of a guide chute and a curve chute.

Background

The coal conveying belt machine of the thermal power plant has long coal conveying line, steep ramp, more dust, large noise, small space and complex equipment. In the running process, dust flies upward, severe pollution is caused to the working site and the surrounding environment, a flat plate type guide chute is generally adopted in the conventional guide chute system device, the air flow in the conventional guide chute system device is forcedly reflected due to the blocking of a flat plate, the whole flow field is in a disordered state, the formation of a negative pressure area is not facilitated, the power of a dust remover is increased, and the cost and the energy waste are caused; the current curve blanking chute system device generally adopts a streamline vertical coal falling structure mode, the impact of logistics on a next-stage belt is large, materials are scattered, splashed, scattered and damaged by throwing objects, and the service life of the adhesive tape is low. In addition, how to realize the buffer of the impact of the material flow to the next stage belt through the fusion and the cooperation of the guide chute and the curve chute, reduce the induced air quantity and maximally reduce the phenomena of scattering materials and powder, and is a problem to be solved in the prior art.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a fusion device of a guide chute and a curve chute, wherein the curve chute changes the traditional streamline vertical coal falling structure mode and adopts a coal falling mode with a curve sliding smooth structure. The materials are input into the belt conveyor through the material receiving spoon, the inertia and the speed of the falling of the materials are controlled in a curve type sliding down and smooth mode, the relative balance and stability of the falling speed of the materials and the conveying speed of the material receiving belt are realized, the inner wall along the way is intensively flushed, the accumulation and the blockage in the chute are eliminated, and the labor intensity of workers is reduced.

In order to achieve the aim, the technical proposal of the utility model is to design a fusion device of a guide chute and a curve chute,

the device comprises a numerical control double-seal bow-type guide chute system device and a curve blanking chute system device; the numerical control double-seal bow-type guide chute system devices are at least two, and the curve blanking chute system devices are positioned between two adjacent numerical control double-seal bow-type guide chute system devices;

the numerical control double-seal bow-type guide chute system device comprises a conveying belt conveyor and a guide chute surrounding the conveying belt conveyor; the guide chute is arranged above the conveying belt conveyor;

the curve blanking chute system device comprises a curve arc-shaped collecting cover, a curve chute and a receiving funnel which are integrally formed or assembled from top to bottom, wherein the curve arc-shaped collecting cover is positioned above a conveying belt conveyor of the numerical control double-seal arch-shaped material guiding chute system device, and the receiving funnel is communicated with a material guiding chute of the other numerical control double-seal arch-shaped material guiding chute system device.

The further technical scheme is that at least two partition boards for forming a tee joint or a four-way joint are arranged on the side wall of the curve chute groove, and the tee joint or the four-way joint are arranged below the curve arc-shaped collecting cover. The lower end of the curve chute is a tee joint or a four-way joint, and the lower end of the tee joint or the four-way joint is respectively connected with a receiving funnel (or a receiving spoon) so that the curve chute can shunt the coal to three or four next-stage conveyor belts through the curve blanking chute system device during coal conveying. The curve blanking chute tee bend equipment adopts electric putter and ship type to turn over the board switching mode, effectively ensures tee bend blanking switch direction and prevents long-pending material and the jam phenomenon in the tee bend. The tee joint or the four-way joint is arranged at the lower end of the curve coal dropping pipe at the head part of the coal conveying belt conveyor, and materials are conveyed to two sides of the tail part of the belt conveyor in a split mode, so that the material conveying requirement is met.

The further technical scheme is that the shape of the receiving hopper is contoured with the parabolic track of the material conveyed from the tail end of the conveying belt conveyor. And (3) adopting advanced EDEM logistics simulation design software, SW three-dimensional modeling software and CAD drawing software to perform curve simulation design on the material transfer chute, and finally obtaining that the minimum (due to the bent shape structure of the material receiving funnel) included angle between the inclined surface and the horizontal surface of the material receiving funnel is 60 degrees. The original streamline blanking pipe system is designed into a curvilinear anti-impact noise reduction chute, materials do not impact in the chute, each impact angle is controlled within 20 degrees, and the impact and impact sound of the material in the curvilinear blanking pipe is less than or equal to 85 dB.

The blanking mode of the original streamline structure is changed into the blanking mode of the curve structure, and the important problems that the blanking pipe is blocked by adopting the modes of dead coal pile and smashing the materials in the material transferring process, the material is scattered, the wear-resistant lining plate is short in service life, large in noise, high in dust concentration, and easy to crush due to collision of massive coals are thoroughly solved.

Compared with a common blanking chute, the curve blanking chute has the main characteristics that the bundle-shaped downward sliding of materials is changed, the materials smoothly slide into a belt conveyor through a receiving spoon, the impact of logistics on a next-stage belt is relieved, the materials slide along the chute, and no scattered, splashing and turbulent material throwing are generated. The noise of the chute in the running process is reduced to the maximum extent, and the lump coal rate is correspondingly improved.

The belt feeder head dust cover adopts the arc kuppe form, and the lower part adopts curve blanking chute mode, and control material impact angle and material receiving funnel wall angle are less than 20 degrees, reduce material impact and striking noise and improve the lump coal rate. The arc-shaped guide cover and the inner wear-resistant lining plate curve blanking chute coal-passing surface materials of the funnel are NM360, NM400, NM500, NM600 wear plates and wear-resistant surfacing plates (high-chromium welding wire surfacing) performance materials, and the service life is ensured to be 5 years or more. The shape of the receiving hopper curve is a material parabolic track, the minimum included angle between the inclined surface of the hopper and the horizontal plane is 60 degrees, the material parabolic curve is ensured to enter the arc-shaped flow guiding device at the head of the belt conveyor to be converged and fall, the induced air quantity is reduced, and the risks of coal accumulation and coal wet blocking of the hopper are reduced. The design of the curve blanking chute of the transfer belt adopts a hexagonal chamfer shape, so that accumulation in the curve blanking chute is prevented. The inner lining plates of the curve blanking chute are made of wear-resistant materials such as NM360, NM400, NM500, NM600 wear-resistant plates and wear-resistant surfacing plates (high-chromium welding wire surfacing), and compared with the original streamline blanking mode, the service life of the wear-resistant lining plates of the curve chute is prolonged by one order of magnitude.

The technical scheme is that a PLC program controller is arranged outside the fusion device and is in signal connection with a guide chute pressure sensor positioned in the numerical control double-seal bow-type guide chute system device; the PLC is also connected with a conveying belt conveyor in the numerical control double-seal bow-type guide chute system device.

The further technical scheme is that a guide chute cover plate of the guide chute adopts an arch type cover plate; two sides of the guide chute cover plate are respectively provided with a chute side plate, and the guide chute cover plate is fixedly and hermetically connected with the chute side plates. The numerical control double-seal bow-shaped guide chute cover plate adopts a bow-shaped cover plate, so that the device is not flushed with water and the service life of the device is prolonged except for increasing the internal volume rate and guiding the airflow.

According to the technical scheme, a dovetail plug type internal-inserting everting double-layer edge sealing belt for isolating the air exchange inside and outside the sealed area of the guide chute is arranged between the chute side plate of the guide chute and the edge of the conveying belt conveyor. The dovetail inserting type internally-inserted and externally-turned double-layer edge sealing belt comprises a first sealing plate which is propped against the groove side plate and a second sealing plate which is propped against the edge of the conveying belt, the second sealing plate is combined with the first sealing plate, and a plurality of propping strips are arranged on the surface of the second sealing plate, facing the conveying belt; the first sealing plate and the second sealing plate are arranged at an included angle, and the included angle formed by the first sealing plate and the second sealing plate is the included angle between the side plate of the large groove and the edge of the conveying belt. Because the dovetail inserting type internally inserted and externally turned double-layer edge sealing belt is made of rubber materials and has certain elasticity, the first sealing plate is matched with the side wall of the groove, and the second sealing plate is abutted against the edge of the conveying belt through a plurality of raised abutting strips, the sealing effect can be well achieved.

The further technical scheme is that the guide chute is transversely arranged, and the curve blanking chute is vertically arranged.

The utility model has the advantages and beneficial effects that:

the speed of the material falling onto the belt is reduced to be close to the running speed of the material receiving belt so as to relieve the impact of the material flow on the next stage of belt, reduce the induced air quantity and maximally reduce the phenomena of material scattering and powder leakage, and ensure that the complex material is not blocked and the dust concentration of a blanking point is reduced to the minimum.

The curve blanking chute and the belt conveyor guide chute are organically combined through the material receiving spoon, so that the induced air quantity is reduced, the dust of a wind field is reduced from the source, and the comprehensive dust treatment capability is improved.

And adopting advanced EDEM logistics simulation design software, SW three-dimensional modeling software and CAD drawing software to carry out curve simulation design on the material transfer chute. The original streamline blanking pipe system is designed into a curvilinear anti-impact noise reduction chute, materials do not impact in the chute, each impact angle is controlled within 20 degrees, and the impact and impact sound of the material in the curvilinear blanking pipe is less than or equal to 85 dB.

The blanking mode of the original streamline structure is changed into the blanking mode of the curve structure, and the important problems that the blanking pipe is blocked by adopting the modes of dead coal pile and smashing the materials in the material transferring process, the material is scattered, the wear-resistant lining plate is short in service life, large in noise, high in dust concentration, and easy to crush due to collision of massive coals are thoroughly solved.

Compared with a common blanking chute, the curve blanking chute has the main characteristics that the bundle-shaped downward sliding of materials is changed, the materials smoothly slide into a belt conveyor through a receiving spoon, the impact of logistics on a next-stage belt is relieved, the materials slide along the chute, and no scattered, splashing and turbulent material throwing are generated. The noise of the chute in the running process is reduced to the maximum extent, and the lump coal rate is correspondingly improved.

The belt feeder head dust cover adopts the arc kuppe form, and the lower part adopts curve blanking chute mode, and control material impact angle and material receiving funnel wall angle are less than 20 degrees, reduce material impact and striking noise and improve the lump coal rate. The arc-shaped guide cover and the inner wear-resistant lining plate curve blanking chute coal-passing surface materials of the funnel are NM360, NM400, NM500, NM600 wear plates and wear-resistant surfacing plates (high-chromium welding wire surfacing) performance materials, and the service life is ensured to be 5 years or more.

The numerical control double-seal bow-shaped guide chute cover plate adopts a bow-shaped cover plate, so that the device is not flushed with water and the service life of the device is prolonged except for increasing the internal volume rate and guiding the airflow.

The shape of the receiving hopper curve is a material parabolic track, the minimum included angle between the inclined surface of the hopper and the horizontal plane is 60 degrees, the material parabolic curve is ensured to enter the arc-shaped flow guiding device at the head of the belt conveyor to be converged and fall, the induced air quantity is reduced, and the risks of coal accumulation and coal wet blocking of the hopper are reduced.

The design of the curve blanking chute of the transfer belt adopts a hexagonal chamfer shape, so that accumulation in the curve blanking chute is prevented. And the lining plates of the curve blanking chute are made of NM360, NM400, NM500, NM600 wear-resistant plates and wear-resistant surfacing plates (high-chromium welding wire surfacing), and compared with the original streamline blanking mode, the service life of the lining plates of the curve chute is prolonged by one order of magnitude.

Drawings

FIG. 1 is a flow field schematic of a prior art flat-plate type guide chute and an arcuate guide chute of the present utility model;

FIG. 2 is a schematic diagram of a chute-to-curve chute fusion apparatus of the present utility model;

FIG. 3 is a schematic view of the system apparatus and curved chute of FIG. 2 showing only one digitally controlled double sealed arcuate chute;

fig. 4 is a perspective view of fig. 2;

FIG. 5 is a longitudinal cross-sectional view of FIG. 4;

FIG. 6 is an enlarged fragmentary schematic view of a portion of the dovetail insert in the vicinity of the inverted double-layer edge sealing strip component of FIG. 4;

FIG. 7 is an enlarged partial schematic view of the portion of FIG. 6 adjacent the dovetail insert inside-in double-layer edge sealing strip component.

In the figure: 1. a numerical control double-sealing bow-type guide chute system device; 2. a curved blanking chute system device; 3. a conveyor belt; 4. a guide groove; 5. a curved arc-shaped current collecting cover; 6. a curved chute; 7. a receiving hopper; 8. a partition plate; 9. a guide chute cover plate; 10. a trough side plate; 11. dovetail insert type inner-inserting everting double-layer edge sealing tape.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

As shown in fig. 2 to 7, the utility model relates to a fusion device of a guide chute and a curve chute, which comprises a numerical control double-seal bow-type guide chute 4 system device 1 and a curve blanking chute system device 2; at least two numerical control double-seal bow-type guide chute 4 system devices 1 are arranged, and a curve blanking chute system device 2 is positioned between two adjacent numerical control double-seal bow-type guide chute 4 system devices 1; the numerical control double-seal bow-type guide chute 4 system device 1 comprises a conveying belt conveyor 3 and a guide chute 4 surrounding the conveying belt conveyor 3; the guide chute 4 is arranged above the conveying belt conveyor 3; the curve blanking chute system device 2 comprises a curve arc-shaped collecting cover 5, a curve chute 6 and a receiving funnel 7 which are integrally formed or assembled from top to bottom, wherein the curve arc-shaped collecting cover 5 is positioned above the conveying belt conveyor 3 of the numerical control double-seal arch-shaped guide chute 4 system device 1, and the receiving funnel 7 is communicated with the guide chute 4 of the other numerical control double-seal arch-shaped guide chute 4 system device 1. At least two clapboards 8 for forming a tee joint or a four-way joint are arranged on the side wall of the curve chute 6, and the tee joint or the four-way joint is arranged below the curve arc-shaped collecting cover 5. The receiving hopper 7 is shaped to follow the parabolic trajectory of the material being conveyed from the conveyor belt end of the conveyor belt 3. The fusion device is provided with a PLC program controller which is in signal connection with a pressure sensor of a guide chute 4 in the numerical control double-seal bow-type guide chute 4 system device 1; the PLC is also in signal connection with a conveying belt conveyor 3 in the numerical control double-seal bow-type guide chute 4 system device 1. The guide chute cover plate 9 of the guide chute 4 adopts an arch type cover plate; two sides of the guide chute cover plate 9 are respectively provided with a chute side plate 10, and the guide chute cover plate 9 is fixedly and hermetically connected with the chute side plates 10. A dovetail plug type inner-plug and outer-turn double-layer edge sealing belt 11 for isolating the air exchange in the closed area of the guide chute 4 is arranged between the chute side plate 10 of the guide chute 4 and the edge of the conveying belt conveyor 3. The guide chute 4 is transversely arranged, and the curve blanking chute is vertically arranged.

The double-seal arched guide chute is arranged at the head part or the middle part or the tail part of the coal conveying belt conveyor or at the corresponding applicable part of the belt conveyor, and mainly seals the periphery of coal falling of the belt conveyor. The function is as follows: firstly, preventing falling coal from impacting and scattering coal to fall; secondly, the induced wind flow and the air shock wave wind flow are controlled to be spread in an unorganized manner, so that dust is prevented from being polluted in a large area; thirdly, the escape of dust-containing air flow in the material guide groove area is controlled in an organized way, so that serious dust pollution caused by a production place is avoided; fourthly, classifying according to the particle size of the dust in the guide chute, shortening the dust settling distance and the management range, and controlling the dust pollution in the exclusive area; fifthly, by the air quantity matching of the dust remover, a micro negative pressure state is created in the effective area of the guide chute, and the equipment investment cost is reduced.

The double-seal bow-type guide chute device consists of a guide chute bow-shaped cover, a guide chute side plate, a transverse bracket, a vertical bracket, an edge sealing belt, a compacting device and the like; all structural parts of the guide chute are produced by adopting a die punching and calendaring processing technology, so that the universality and interchangeability of all structural parts are ensured.

(1) Arched cover of guide chute

(a) The upper cover of the guide chute is designed to be arched, the volume of the guide chute can be increased, the pressure of induced air flow and air shock wave air flow can be reduced, the positive pressure air flow in the guide chute can be reduced and reduced, a stable negative pressure flow field can be formed in the whole guide chute space, and a good guide chute negative pressure space can be formed. And meanwhile, the sectional area of the guide chute is increased by 30%, so that the sealing pressure of a sealing system and the working load of the dust remover are reduced. In addition, the arched guide groove structure can form an air flow field which flows smoothly.

The air flow in the flat plate type guide chute is forcedly reflected due to the blocking of the flat plate, the whole flow field is in a disorder state, the formation of a negative pressure area is not facilitated, the power of the dust remover is increased, and the cost and the energy waste are caused.

(b) The side plates on two sides of the guide chute are designed to be trapezoidal, so that the blanking is in an isosceles triangle shape, the guide and material fixing effects on the coal unloading blanking are achieved, the belt is not easy to deviate and does not generate coal scattering phenomenon, and the service life of the guide chute equipment is ensured to be more than 10 years.

(c) The arch cover of the guide chute is made of a novel Polycarbonate (PC) polymer material, the novel material has impact resistance (30 times of an acrylic plate), impact resistance (3 kg/2m drop hammer has no crack), high tensile strength (up to 350kgf/cm < 2 >), bending resistance (the minimum bending radius is 175 times of the thickness of the plate), high corrosion resistance (acid resistance, alkali resistance and hydrochloric acid resistance, no corrosion and cracking at 144 h), high light transmittance (up to 89%), aging resistance (the oxidation resistance index is up to 47%), sound insulation effect (the sound insulation sound volume is improved by 5-9 dB compared with glass), light weight (6.5 times lighter than the steel plate, only 1.2kg per 1 square meter), flame retardance (self-extinguishing from fire), the arch cover framework and matched accessory equipment are made of 304# stainless steel materials, and the soft connection sealing structure between the arch covers is unique, the air tightness is good, the installation is light, and the service life is ensured to be 10 years or more.

Rubber sealing belt with double sealing edges for guide chute

(a) The rubber sealing belt with double sealing edges mainly plays a role in sealing the edges of the two sides of the guide chute, prevents coal scattering and air leakage of the edges of the two sides of the guide chute, meets the micro negative pressure requirement in the guide chute, and prevents powder spraying and dust raising at the edges of the two sides of the guide chute.

(b) The rubber sealing belt at the edge of the guide chute is divided into a standard type and a compound type, and is a dovetail type internally-inserted and externally-turned two-layer closed adhesive tape. The dovetail type sealing tape is mainly convenient for mounting and positioning the sealing tape and fusing two layers of the sealing tape; the two layers of closed type of internal insertion and external turning are adopted to mainly play a role in internal insertion and coal and external turning and dust blocking, so that the edge sealing effect of the guide chute is ensured.

(c) The standard edge sealing belt is formed by adopting an IR polyisoprene material for mould pressing, and is suitable for an adhesive tape type belt conveyor with the belt speed in the range of 1.6 m/s-2.5 m/s; the composite edge sealing belt is prepared by compounding TPU copolymer and IR polyisoprene material, and is suitable for a belt conveyor with the belt speed in the range of 2.5 m/s-5 m/s; the edge sealing belts of the two types have the characteristics of high wear resistance, aging resistance, high elongation strength, good elasticity, small compression deformation, small friction coefficient, long service life and the like.

(d) The edge sealing strip out-turned sealing layer is tightly attached to the rubber surface of the belt conveyor, and is mainly attached by rubber elasticity, so that the friction coefficient is small, the friction temperature is low, and the influence on the driving power of the belt conveyor due to overlarge tension of the edge sealing strip is avoided.

(e) The hardness of the edge sealing tape and the hardness of the belt conveyor belt are completely matched in the relative friction temperature range, the Shore hardness of the edge sealing tape is less than 85 degrees, the hardness of the edge sealing tape is slightly lower than that of the belt conveyor belt, the hardness of the belt conveyor belt is in accordance with the hardness and softness friction requirement, and the influence on the normal service life caused by the abrasion of the belt conveyor belt is avoided.

(f) The friction contact surface of the composite edge sealing belt and the belt conveyor belt is made of TPU (thermoplastic polyurethane) copolymer material, so that the wear resistance is extremely strong, and the TPU copolymer material automatically softens when the friction temperature rises to 50-70 ℃, so that the belt conveyor belt is not damaged after the contact point of the sealing belt is softened; the non-friction contact surface is made of IR polyisoprene material, and has the advantages of bending resistance, good rebound performance, good composite commonality of the two materials, high peel strength and low manufacturing cost.

Main characteristics of the curve chute

(1) The curve chute system device mainly comprises a curve arc-shaped collecting cover, an arc-shaped collecting baffle, a tee joint, a four-way joint, an electric push rod, a curve chute (coal dropping pipe), a wear-resistant lining plate, a receiving spoon and the like.

(2) The curve chute changes the traditional streamline vertical coal falling structure mode, and adopts the coal falling mode of a curve sliding down and smooth structure. The materials are input into the belt conveyor through the material receiving spoon, the inertia and the speed of the falling of the materials are controlled in a curve type sliding down and smooth mode, the relative balance and stability of the falling speed of the materials and the conveying speed of the material receiving belt are realized, the inner wall along the way is intensively flushed, the accumulation and the blockage in the chute are eliminated, and the labor intensity of workers is reduced.

(3) The material sliding inertia and speed are controlled through curve sliding, the material slides along the chute, the impact of logistics on the next-stage belt is relieved, the phenomena of scattered, splashing, disordered throwing of the material, smashing of the adhesive tape and the like are eliminated, and the service life of the adhesive tape is prolonged.

(4) By installing the curve chute, the induced air quantity is reduced, the dust raising of the wind field is reduced from the source, and the comprehensive dust treatment capability is improved, so that the production field environment is improved.

(5) The curve chute is used for controlling the material sliding inertia and speed through the bundle sliding, avoiding lump coal collision, correspondingly improving the lump coal rate, reducing noise and prolonging the service life of the wear-resistant lining plate in the curve chute. Reducing environmental pollution and increasing economic benefit

(6) A curved arc-shaped guide cover is arranged at the front position of a head roller of the coal conveying belt conveyor, so that a material parabolic track is guided to slide downwards, the impact force and impact sound of the material parabolic are relieved, the impact sound and resonance sound are reduced, the noise pollution is reduced, and the lump coal rate is improved.

(7) The tee joint or the four-way joint is arranged at the lower end of the curve coal dropping pipe at the head part of the coal conveying belt conveyor, and materials are conveyed to the two sides of the tail part A and B of the belt conveyor in a split mode, so that the material conveying requirement is met.

Main performance of curve chute

(1) And adopting advanced EDEM logistics simulation design software, SW three-dimensional modeling software and CAD drawing software to carry out curve simulation design on the material transfer chute. The original streamline coal dropping pipe system is designed into a curvilinear anti-impact noise reduction chute, materials do not impact in the chute, each impact angle is controlled within 20 ℃, and the impact and impact sound of the curvilinear coal dropping pipe materials are less than or equal to 85 dB.

(2) The original streamline structure coal dropping mode is changed into the curve structure coal dropping mode, and the important problems that the coal dropping pipe adopts a dead coal pile mode, a material smashing mode and a material blocking mode, a material scattering mode, a wear-resistant lining plate, short service life, large noise, high dust concentration, large coal blocks, and the like are easy to crush due to collision are thoroughly solved in the material transferring process.

(3) Compared with a common coal chute, the curve chute has the main characteristics that the bundle-shaped downward sliding of materials is changed, the materials smoothly slide into a belt conveyor through a receiving spoon, the impact of logistics on a next-stage belt is relieved, the materials slide along the chute, and no scattered, splashing and turbulent material throwing are generated. The noise of the chute in the running process is reduced to the maximum extent, and the lump coal rate is correspondingly improved.

(4) The belt feeder head dust cover adopts the arc kuppe form, and the lower part adopts curve chute mode, and control material impact angle and material receiving funnel wall angle are less than 20 degrees, reduce material impact and striking noise and improve the lump coal rate. The arc-shaped air guide sleeve and the inner wear-resistant lining plate curve chute coal-passing surface materials of the funnel are made of NM360 and NM500 high wear-resistant materials, and the service life is ensured to be 5 years or more.

(5) The funnel curve is in the shape of a material parabolic track, the minimum included angle between the inclined surface of the funnel and the horizontal plane is 60 degrees, and the minimum included angle between the ridge line and the horizontal line is 55 degrees. The parabolic material is ensured to enter the arc-shaped flow guiding device at the head of the belt conveyor to be converged and fall, the induced air quantity is reduced, and the risks of coal accumulation in a hopper and coal wet blocking are reduced.

(6) The design of the curve chute of the transfer belt adopts a hexagonal chamfer shape, so that accumulation in the curve chute is prevented. The lining plates of the curve chute are made of NM360 wear-resistant materials, and compared with the original streamline coal dropping mode, the service life of the lining plates of the curve chute is prolonged by one order of magnitude.

(7) The three-way equipment for the curve coal dropping chute adopts an electric push rod and ship type turning plate switching mode, so that the coal dropping switching direction of the three-way is effectively ensured, and the phenomena of accumulation and blockage in the three-way are prevented. The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (7)

1. The fusion device of the guide chute and the curve chute is characterized by comprising a numerical control double-seal bow-type guide chute system device and a curve blanking chute system device; the numerical control double-seal bow-type guide chute system devices are at least two, and the curve blanking chute system devices are positioned between two adjacent numerical control double-seal bow-type guide chute system devices;

the numerical control double-seal bow-type guide chute system device comprises a conveying belt conveyor and a guide chute surrounding the conveying belt conveyor; the guide chute is arranged above the conveying belt conveyor;

the curve blanking chute system device comprises a curve arc-shaped collecting cover, a curve chute and a receiving funnel which are integrally formed or assembled from top to bottom, wherein the curve arc-shaped collecting cover is positioned above a conveying belt conveyor of the numerical control double-seal arch-shaped material guiding chute system device, and the receiving funnel is communicated with a material guiding chute of the other numerical control double-seal arch-shaped material guiding chute system device.

2. The fusion device of a guide chute and a curved chute according to claim 1, wherein at least two baffles for forming a tee or a four-way are arranged on the side wall of the curved chute, and the tee or the four-way is arranged below the curved arc-shaped collecting hood.

3. The chute-to-curve chute fusion apparatus of claim 1, wherein the receiving hopper is shaped to follow a parabolic path of material conveyed from a conveyor belt end of the conveyor belt.

4. A fusion device of a guide chute and a curve chute according to claim 2 or 3, wherein a PLC (programmable logic controller) is arranged outside the fusion device and is in signal connection with a guide chute pressure sensor positioned in a numerical control double-seal bow-type guide chute system device; the PLC is also connected with a conveying belt conveyor in the numerical control double-seal bow-type guide chute system device.

5. The fusion device of a guide chute and a curved chute according to claim 4, wherein the guide chute cover plate of the guide chute adopts an arch-type cover plate; two sides of the guide chute cover plate are respectively provided with a chute side plate, and the guide chute cover plate is fixedly and hermetically connected with the chute side plates.

6. The fusion device of the guide chute and the curve chute according to claim 5, wherein a dovetail plug-in type inner-plug-in everting double-layer edge sealing belt for isolating the air exchange inside and outside the closed area of the guide chute is arranged between the chute side plate of the guide chute and the edge of the conveying belt machine.

7. The chute and curved chute fusion device of claim 6, wherein the chute is disposed laterally and the curved chute is disposed vertically.