Coal leaking hopper for coal bunker

Abstract

The utility model provides a coal hopper for a coal bunker, which comprises a funnel-shaped frame body, the upper end of the frame body is provided with a feed port connected with the coal bunker, and the lower end of the frame body is provided with a discharge port; a detachable bottom plate is slidably arranged at the position, located at the discharging port, of the frame body, and a linear driving mechanism is arranged between the frame body and the bottom plate. And the linear driving mechanism drives the bottom plate to move so as to open and block the discharge hole. The linear driving mechanism comprises at least one of an automatic driving mechanism and a manual driving mechanism. The bottom plate is used for opening or closing the discharge port and adjusting the size of the discharge port, and the bottom plate can bear the impact force of free falling of coal flow. The bottom plate can be replaced after long-term stress deformation, and the service life of the whole coal leakage hopper can be greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of coal transfer in coal storage silo, concretely relates to a coal leakage hopper for coal bunker. BACKGROUND

[0002] Coal storage silo is widely used in China, and the existing amount is huge. The inside of the coal storage silo is a cylinder, and the bottom has multiple square conical discharge openings. The discharge opening is usually one meter to two meters square, which is much smaller than the inner diameter of the coal bunker. The coal leakage hopper is connected to the coal bunker underground. The coal leakage hopper is a structure similar to a cone, with a radius that gradually decreases from top to bottom. The bottom is generally circular or square. The existing coal leakage hopper is generally open, and is made of steel combined and welded. Among them, a steel plate is used as a coal receiving plate. In order to reduce the impact damage of the falling material to the belt surface, the coal receiving plate is usually designed and manufactured to have a certain inclination angle as a buffer. The patent CN219971258U is a similar structure.

[0003] During the use of the coal mine coal leakage hopper, the coal receiving plate bears the weight of the coal in the coal leakage hopper and the impact force of the coal on the coal receiving plate when the coal is falling. At the same time, the inner wall also bears the wear and tear caused by the long-term contact and friction of the coal. Therefore, the coal leakage hopper is easy to deform and damage. A large amount of manpower, material resources, time, and electric welding measures are required for maintenance, which seriously shortens the service life of the coal leakage hopper. SUMMARY

[0004] The utility model provides a coal leakage hopper for coal bunker which is not easy to damage.

[0005] The utility model discloses a coal leakage hopper for coal bunker which is not easy to damage.

[0006] The linear drive mechanism includes at least one of an automatic drive mechanism or a manual drive mechanism.

[0007] The automatic drive mechanism includes an oil cylinder hingedly arranged between the outer surface of the side plate of the frame body and the bottom plate of the corresponding side. The manual drive mechanism includes at least one row of racks arranged on the outer surface of the bottom plate, with the length direction of the racks parallel to the moving direction of the bottom plate. A rotating shaft is rotatably arranged on the frame body. A gear is fixedly arranged on the rotating shaft at a position corresponding to the rack. The gear and the rack are engaged. A hand wheel is arranged at one end or both ends of the rotating shaft.

[0008] The frame body comprises a front plate, a left plate, a back plate and a right plate which enclose a funnel shape; the left plate on the left side of the discharge port and the right plate on the right side of the discharge port of the frame body are respectively provided with slide rails for limiting the left and right directions of the bottom plate; the left and right ends of the bottom plate are respectively connected with the slide rails; the lower ends of the two oil cylinders are respectively arranged on the left plate on the left side of the discharge port and the right plate on the right side of the discharge port of the frame body, and the upper ends of the two oil cylinders are respectively connected with the left and right sides of the upper end of the bottom plate.

[0009] The lengths of the lower ends of the back plate, the left plate and the right plate are greater than the length of the front plate, and the lower ends of the back plate, the left plate and the right plate are inwardly bent to form a recess; the inner surfaces of the front plate, the left plate, the back plate and the right plate are provided with strip-shaped wear-resistant blocks.

[0010] Compared with the prior art, the bottom plate is arranged on the frame body and is used for opening or closing the discharge port and adjusting the size of the discharge port. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural principle schematic diagram of the utility model.

[0012] Figure 2 is a frame body schematic diagram.

[0013] Figure 3 is a bottom plate schematic diagram.

[0014] Figure 4 is a manual driving mechanism schematic diagram.

[0015] Figure 5 is an oil cylinder schematic diagram.

[0016] Figure 6 is a slide rail schematic diagram.

[0017] Figure 7 is a coal leakage hopper working process schematic diagram.

[0018] Wherein, frame body 1, slide rail 2, bottom plate 3, manual driving mechanism 4, oil cylinder 5, mine car 6, coal bunker 7, back plate 1.1, left plate 1.2, right plate 1.3, front plate 1.4, fixed block 1.5, fixed lug plate 1.6, wear-resistant block 1.7, mounting hole 1.8; sliding groove 2.0; connecting hole 3.1, rack 3.2; hand wheel 4.1, gear 4.2, bearing seat 4.3; piston rod fixed end 5.1; pin shaft 5.2. DETAILED DESCRIPTION

[0019] In the utility model, unless another definite provision and limitation, the technical terms used in the application should be the general meaning understood by the technical personnel described in the utility model. The terms "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, which can be fixed connection, or detachable connection, or integrated; can be directly connected, or indirectly connected through an intermediate medium; can be mechanical connection, or electrical connection. Unless another definite provision and limitation, the first feature is "on" or "under" the second feature, which can be the direct contact of the first and second features, or indirectly contact through an intermediate medium. Moreover, the first feature is "on" or "above" or "on" the second feature, which can be the first feature directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than the second feature. The first feature is "under" or "below" or "under" the second feature, which can be the first feature directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than the second feature. The relationship terms such as first, second and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. The orientation or positional relationship indicated by the terms such as "center", "transverse", "longitudinal", "length", "width", "thickness", "height", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise" and the like used in the description are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation.

[0020] The technical scheme of the utility model will be described clearly and completely in combination with the drawings and specific embodiments. As shown in the drawings, Figures 1-7 A coal chute for coal bunker, comprising a funnel-shaped frame body 1, a feed inlet connected with the coal bunker 7 is arranged at the upper end of the frame body 1, and a discharge outlet is arranged at the lower end; a detachable bottom plate 3 is arranged on the frame body 1 at the position of the discharge outlet and can slide; a linear driving mechanism is arranged between the frame body 1 and the bottom plate 3; the linear driving mechanism drives the bottom plate 3 to move to realize the opening and plugging of the discharge outlet. The bottom plate 3 is arranged to open or close the discharge outlet and adjust the size of the discharge outlet, and the bottom plate 3 is detachably arranged on the frame body 1. The bottom plate 3 can withstand the impact force of the free fall of the coal flow. The bottom plate 3 can be replaced after long-term stress deformation. In addition to the bottom plate 3 being a consumable part and being replaceable at any time, the service life of the entire coal chute can be greatly improved.

[0021] The linear driving mechanism comprises at least one of an automatic driving mechanism or a manual driving mechanism 4. In the utility model, the linear driving mechanism can be provided with only one automatic driving mechanism, such as an oil cylinder 5, a lead screw nut mechanism driven by a motor, a gear 4.2 and a rack 3.2 structure, etc. The manual driving mechanism 4 driven by manual rotation can also be provided, such as a lead screw nut mechanism driven by manual rotation. Two sets of linear driving mechanisms, including automatic and manual driving mechanisms, can also be provided, so as to facilitate operation according to actual conditions. In the structure of the drawing, the automatic driving mechanism and the manual driving mechanism are simultaneously provided between the bottom plate 3 and the frame body 1.

[0022] The automatic driving mechanism comprises an oil cylinder 5 hingedly arranged between the outer surface of the side plate of the frame body 1 and the bottom plate 3 on the corresponding side. The manual driving mechanism 4 comprises at least one row of rack 3.2 arranged on the outer surface of the bottom plate 3, and the length direction of the rack 3.2 is parallel to the moving direction of the bottom plate 3. A rotating shaft is rotatably arranged on the frame body 1. A gear 4.2 is fixedly arranged on the rotating shaft at a position corresponding to the rack 3.2. The gear 4.2 and the rack 3.2 are engaged. A hand wheel 4.1 is arranged at any one end or both ends of the rotating shaft. The inner surface of the bottom plate 3 is used for plugging the coal leakage hopper and is in contact with coal. The outer surface of the bottom plate 3 is the back surface of the inner surface and is not in contact with coal. Bearings are arranged at both ends of the rotating shaft. The two bearings are arranged on the left and right sides of the frame body 1. Bearing seats 4.3 can be fixedly arranged on the left and right sides of the frame body 1, and corresponding bearings are arranged in the bearing seats 4.3. Alternatively, through holes are arranged on the left and right sides of the frame body 1, and the bearings are directly arranged in the through holes. The hand wheel 4.1 can also be provided as a handle. The rack 3.2 is detachably arranged on the bottom plate 3. Preferably, the automatic driving mechanism comprises two oil cylinders 5, which are arranged between the left and right sides of the frame body 1 and the corresponding sides of the bottom plate 3, respectively.

[0023] The frame body 1 comprises a front plate 1.4, a left plate 1.2, a back plate 1.1 and a right plate 1.3 which form a funnel shape; the left plate 1.2 on the left side of the discharge port and the right plate 1.3 on the right side of the discharge port of the frame body 1 are respectively provided with slide rails 2 which limit the left and right directions of the bottom plate 3; the left and right ends of the bottom plate 3 are respectively connected with the slide rails 2; the lower ends of the two oil cylinders 5 are respectively arranged on the left plate 1.2 on the left side of the discharge port and the right plate 1.3 on the right side of the discharge port of the frame body 1, and the upper ends of the two oil cylinders 5 are respectively connected with the left and right sides of the upper end of the bottom plate 3. The limiting mode between the slide rails 2 and the bottom plate 3 can be various, and the commonly used methods can be used. In the structure of the drawings, the inner side of the left slide rail 2 and the right slide rail 2, that is, the side corresponding to the bottom plate 3, is provided with a sliding groove 2.0; the left and right sides of the bottom plate 3 move in the corresponding sliding grooves 2.0. The slide rails 2 and the left plate 1.2 and the right plate 1.3 are detachably connected through bolts, and the mounting holes 1.8 are arranged in rows at the corresponding positions. The upper ends of the left plate 1.2 and the right plate 1.3 at the discharge port position are respectively provided with fixed lug plates 1.6 for mounting bearing seats 4.3. The lower positions of the left plate 1.2 and the right plate 1.3 at the discharge port position are provided with two fixed blocks 1.5 for mounting oil cylinders 5; the left and right sides of the upper end of the bottom plate 3 are respectively provided with connecting holes 3.1 for connecting the oil cylinders 5. The piston rod fixed end 5.1 of the oil cylinder 5 is fixed with the bottom plate 3, and the pin shaft 5.2 of the oil cylinder 5 is connected with the fixed block 1.5.

[0024] The lengths of the lower ends of the back plate 1.1, the left plate 1.2 and the right plate 1.3 are greater than the length of the front plate 1.4, and the lower ends of the back plate 1.1, the left plate 1.2 and the right plate 1.3 are inwardly bent to form a recess; the inner surfaces of the front plate 1.4, the left plate 1.2, the back plate 1.1 and the right plate 1.3 are provided with strip-shaped wear-resistant blocks 1.7. The wear-resistant blocks 1.7 are made of special materials with high hardness, good wear resistance and low friction coefficient. The wear-resistant blocks 1.7 are arranged in a regular manner, and the direction is along the coal flow direction. The outer sides of the front plate 1.4, the left plate 1.2, the back plate 1.1 and the right plate 1.3 are provided with lattice rib stiffeners. In addition, the back plate 1.1 is preferably arranged in an inclined forward manner; the direction of the discharge port is inclined downward to increase the buffering. The movement blocking direction of the bottom plate 3 is perpendicular to the back plate 1.1, and can be inclined downward or upward at an angle of 45 degrees or other angles to achieve blocking and opening of the discharge port.

[0025] In specific implementation: when the coal in the coal bunker 7 needs to be transported, the bottom plate 3 of the coal leakage hopper is opened by rotating the hand wheel 4.1 or the controller or the valve remote control oil cylinder 5, and the opening size of the discharge port can be freely controlled, and the coal flow slides along the inner wall of the coal leakage hopper to the mine car 6 or the belt conveyor.

[0026] The utility model discloses increase the bottom plate 3 before the coal receiving plate bears the impact of coal falling, protect the coal receiving plate, improve the life of the undetachable part of the coal leakage hopper. The inner wall of the coal leakage hopper is in long-term friction contact with coal flow, wear -resistant block 1.7 is added to the inner wall, and the hardness is high, and the friction coefficient is low, so that the coal flow is more smooth, the inner wall abrasion is reduced, can long -term bear the friction of coal flow, prolong the life, also strengthen the overall strength of the coal leakage hopper. The bottom plate 3 is designed as the detachable structure, and the replacement is changed, and the life of the coal leakage hopper is prolonged. In addition, the bottom plate 3 can adjust the flow rate of coal falling, and the flow of coal falling on the belt conveyor is adjusted according to the demand. The bottom plate 3 adopts the automatic and manual two kinds of adjustment structure, and is convenient to use.

[0027] The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in

Claims

1. A coal leakage chute for a coal bunker, comprising a funnel-shaped frame body, an inlet opening connected with the coal bunker being arranged at the upper end of the frame body, and an outlet opening being arranged at the lower end of the frame body; characterized in that: The detachable bottom plate is slidably arranged on the frame body at the position of the discharge port, a linear driving mechanism is arranged between the frame body and the bottom plate, the linear driving mechanism drives the bottom plate to move to realize the opening and blocking of the discharge port, and the linear driving mechanism comprises at least one of an automatic driving mechanism or a manual driving mechanism. The automatic driving mechanism comprises an oil cylinder which is hingedly arranged between the outer surface of the side plate of the frame body and the bottom plate of the corresponding side, the manual driving mechanism comprises at least one rack which is arranged on the outer surface of the bottom plate and has a length direction parallel to the moving direction of the bottom plate, a rotating shaft is rotatably arranged on the frame body, a gear is fixedly arranged on the rotating shaft at a position corresponding to the rack, the gear and the rack are engaged, and a hand wheel is arranged at any one end or both ends of the rotating shaft. The frame body comprises a front plate, a left plate, a back plate and a right plate which enclose a funnel shape, the left plate on the left side of the discharge port and the right plate on the right side of the discharge port of the frame body are respectively provided with slide rails for limiting the left and right directions of the bottom plate, the left and right ends of the bottom plate are respectively slidably connected with the slide rails, the lower ends of the two oil cylinders are respectively arranged on the left plate on the left side of the discharge port and the right plate on the right side of the discharge port of the frame body, and the upper ends of the two oil cylinders are respectively connected with the left and right sides of the upper end of the bottom plate.

2. The coal leakage chute for coal bunker according to claim 1, characterized in that: The lengths of the lower ends of the back plate, the left plate and the right plate are greater than the length of the front plate, the lower ends of the back plate, the left plate and the right plate are inwardly bent to form a recess, and the inner surfaces of the front plate, the left plate, the back plate and the right plate are provided with strip-shaped wear-resistant blocks.

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