Automatic coaling device of boiler

Abstract

The utility model provides an automatic coaling device for a boiler, which comprises a bottom plate, a coal conveying barrel, a hopper, a spiral conveying piece, a screw rod, a plugging plate and a rotating shaft, and an extension arm is arranged above the bottom plate; the coal conveying barrel is connected to the side part of the boiler; the hopper is arranged above the coal conveying barrel and is communicated with the coal conveying barrel through the blanking barrel; the spiral conveying piece is rotationally connected into the coal conveying barrel through a conveying shaft; the screw rod is rotationally connected between the extension arm and the blanking barrel in the horizontal direction; the plugging plate is in sliding connection with the blanking barrel, and a push-pull sleeve which is arranged on the periphery of the screw in a threaded and sleeving manner is connected to the plugging plate; the rotating shaft is rotationally connected between the extension arm and the blanking barrel in the horizontal direction; the peripheries of the screw and the conveying shaft are fixedly sleeved with driven gears correspondingly, and the rotating shaft is slidably sleeved with a driving gear. According to the automatic coaling device of the boiler, the driving gear drives the different driven gears to achieve the functions of discharging coal and conveying the coal into the boiler, manpower is saved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of boilers, and more specifically relates to an automatic coal-feeding device for boilers. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain thermal energy. The original meaning of pot refers to a water container heated on fire, and furnace refers to the place where fuel is burned.

[0003] In the prior art, most boilers are manually charged with coal using a shovel, which wastes manpower and reduces work efficiency. Utility Model Content

[0004] The utility model provides an automatic coal feeding device for a boiler, which can drive different driven gears by sliding a driving gear to realize the functions of dropping coal into a coal conveying barrel and conveying coal into a boiler by a spiral conveyor, thereby saving manpower and improving work efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: to provide an automatic coal feeding device for a boiler, comprising a bottom plate, a coal conveying barrel, a hopper, a screw conveyor, a screw, a blocking plate and a rotating shaft, wherein an extension arm extending upward is arranged above the bottom plate; the coal conveying barrel is used to be connected to the side of the boiler, and the coal conveying barrel extends horizontally toward the extension arm; the hopper is arranged above the coal conveying barrel, and is connected to the top of the coal conveying barrel through a drop barrel; the screw conveyor is rotatably connected to the coal conveying barrel through a conveying shaft, and extends along the axial direction of the coal conveying barrel, and is used to convey coal into the boiler, and the conveying shaft extends to the outside of the coal conveying barrel, and rotates with the extension arm Connection; the screw is connected to the extension arm and the blanking barrel by rotating in the horizontal direction; the sealing plate passes through the side wall of the blanking barrel horizontally and is slidably connected to the blanking barrel to seal the upper opening of the blanking barrel, and the sealing plate is connected to a push-pull sleeve threadedly sleeved on the outer periphery of the screw; the rotating shaft is connected to the extension arm and the blanking barrel by rotating in the horizontal direction, and is located between the screw and the conveying shaft; wherein, the outer peripheries of the screw and the conveying shaft are respectively fixedly sleeved with driven gears, and the two driven gears are staggered in the axial direction of the rotating shaft, and a driving gear is slidably sleeved on the rotating shaft, and the driving gear can move along the axial direction of the rotating shaft to mesh with one of the driven gears.

[0006] In a possible implementation, a push-pull member is provided on the extension arm for driving the driving gear to move along the rotating shaft. The push-pull member extends axially along the rotating shaft, and the extension end is slidingly connected to the driving gear along the circumference of the driving gear. The push-pull member can drive the driving gear to move axially along the rotating shaft.

[0007] In some embodiments, an annular groove is provided on the end surface of the driving gear close to the push-pull member, and a sliding block slidably connected to the annular groove is connected to the telescopic end of the push-pull member.

[0008] In some embodiments, two push-pull members are symmetrically provided on both sides of the rotating shaft.

[0009] In a possible implementation, the driving gear is a sector gear.

[0010] In a possible implementation, an axially extending positioning groove is provided on the outer peripheral wall of the rotating shaft, and a positioning block with a protrusion arranged on the inner peripheral wall of the driving gear and slidingly matched with the positioning groove is provided.

[0011] In a possible implementation, the blocking plate is located above the screw rod.

[0012] In a possible implementation, the rotating shaft is connected to a rotating driving member located outside the extension arm.

[0013] Compared with the prior art, the automatic boiler coal adding device provided in this embodiment has the function of meshing the sliding driving gear with the driven gear on the screw rod so that the sealing plate avoids the upper opening of the blanking barrel, and the coal in the hopper drops into the coal conveying barrel through the blanking barrel. When the coal in the hopper drops a certain amount, the driving gear is driven to make the sealing plate block the upper opening of the blanking barrel, and then the sliding driving gear is meshed with the driven gear on the conveying shaft, so that the spiral conveyor conveys the coal in the coal conveying barrel and the blanking barrel into the boiler, thereby realizing automatic quantitative addition of coal in the boiler, saving manpower and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 A schematic diagram of a cross-sectional structure of a front view of an automatic coal-feeding device for a boiler provided in an embodiment of the utility model;

[0016] Figure 2 For the utility model embodiment Figure 1 The schematic diagram of the local enlarged structure at position Ⅰ in the middle;

[0017] Figure 3 For the utility model embodiment Figure 1 Schematic diagram of the right view of the driving gear.

[0018] Among them, the reference numerals in the figure are:

[0019] 1. Boiler; 10. Boiler plate; 11. Extension arm; 20. Coal conveyor; 30. Hopper; 40. Dropping barrel; 50. Screw conveyor; 51. Conveying shaft; 60. Screw; 61. Driven gear; 70. Sealing plate; 71. Push-pull sleeve; 80. Rotating shaft; 81. Driving gear; 811. Positioning block; 812. Annular groove; 82. Positioning groove; 83. Rotating drive member; 90. Push-pull member; 91. Sliding block. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0022] See also Figures 1 to 3The automatic coal-feeding device for boilers provided by the utility model is now described. The automatic coal-feeding device for boilers includes a bottom plate 10, a coal conveying barrel 20, a hopper 30, a screw conveyor 50, a screw 60, a blocking plate 70 and a rotating shaft 80. An extension arm 11 extending upward is provided above the bottom plate 10; the coal conveying barrel 20 is used to be connected to the side of the boiler 1, and the coal conveying barrel 20 extends horizontally toward the extension arm 11; the hopper 30 is arranged above the coal conveying barrel 20, and is connected to the top of the coal conveying barrel 20 through the drop barrel 40; the screw conveyor 50 is rotatably connected to the coal conveying barrel 20 through the conveying shaft 51, and extends along the axial direction of the coal conveying barrel 20, and is used to convey coal into the boiler 1, and the conveying shaft 51 extends to the outside of the coal conveying barrel 20, and is rotatably connected to the extension arm 11; the screw 60 rotates horizontally It is connected between the extension arm 11 and the blanking barrel 40; the sealing plate 70 horizontally penetrates the side wall of the blanking barrel 40 and is slidably connected to the blanking barrel 40, so as to seal the upper opening of the blanking barrel 40, and the sealing plate 70 is connected with a push-pull sleeve 71 threadedly sleeved on the outer periphery of the screw 60; the rotating shaft 80 is rotatably connected between the extension arm 11 and the blanking barrel 40 along the horizontal direction, and is located between the screw 60 and the conveying shaft 51; wherein, the outer peripheries of the screw 60 and the conveying shaft 51 are respectively fixedly sleeved with driven gears 61, and the two driven gears 61 are staggered in the axial direction of the rotating shaft 80, and a driving gear 81 is slidably sleeved on the rotating shaft 80, and the driving gear 81 can move along the axial direction of the rotating shaft 80 to mesh with one of the driven gears 61.

[0023] The embodiment of the present application provides an automatic coal adding device for a boiler. During its actual use, the sealing plate 70 is in a state of sealing the blanking barrel 40 for a long time. The hopper 30 is filled with coal in advance. When coal needs to be added to the boiler 1, the sliding driving gear 81 is engaged with the driven gear 61 on the screw 60, so that the sealing plate 70 avoids the upper opening of the blanking barrel 40, and the coal in the hopper 30 falls into the coal conveying barrel 20 through the blanking barrel 40. When the coal in the hopper 30 drops a certain amount, the driving gear 81 is driven to make the sealing plate 70 seal the upper opening of the blanking barrel 40, and then the sliding driving gear 81 is engaged with the driven gear 61 on the conveying shaft 51, so that the spiral conveying member 50 conveys the coal in the coal conveying barrel 20 and the blanking barrel 40 to the boiler 1, thereby realizing automatic quantitative addition of coal in the boiler 1, saving manpower and improving work efficiency.

[0024] Compared with the prior art, the automatic boiler coal adding device provided in this embodiment has a sliding driving gear 81 that meshes with the driven gear 61 on the screw 60, so that the sealing plate 70 avoids the upper opening of the blanking barrel 40, and the coal in the hopper 30 falls into the coal conveying barrel 20 through the blanking barrel 40. When the coal in the hopper 30 drops a certain amount, the driving gear 81 is driven to make the sealing plate 70 block the upper opening of the blanking barrel 40, and then the driving gear 81 is slid to engage with the driven gear 61 on the conveying shaft 51, so that the spiral conveyor 50 conveys the coal in the coal conveying barrel 20 and the blanking barrel 40 to the boiler 1, thereby realizing the automatic quantitative addition of coal in the boiler 1, saving manpower and improving work efficiency.

[0025] In a possible implementation, the extension arm 11 is configured as follows: Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The extension arm 11 is provided with a push-pull member 90 for driving the driving gear 81 to move along the rotating shaft 80. The push-pull member 90 extends along the axial direction of the rotating shaft 80, and the extension end is slidably connected to the driving gear 81 along the circumferential direction of the driving gear 81. The push-pull member 90 can drive the driving gear 81 to move along the axial direction of the rotating shaft 80.

[0026] Specifically, the push-pull member 90 is a cylinder, and the telescopic end of the cylinder is slidably connected to the driving gear 81, that is, the push-pull member 90 is indirectly connected to the driving gear 81, and drives the driving gear 81 to move axially, and also achieves the effect that the rotation of the driving gear 81 and the push-pull member 90 do not interfere with each other.

[0027] In some embodiments, see Figures 1 to 3 An annular groove 812 is provided on the end surface of the driving gear 81 close to the push-pull member 90 , and a sliding block 91 slidably connected to the annular groove 812 is connected to the telescopic end of the push-pull member 90 .

[0028] Specifically, the sliding connection between the slider 91 and the annular groove 812 prevents the push-pull member 90 from being damaged by the circumferential force of the driving gear 81 , thereby improving practicality.

[0029] In some embodiments, see Figure 1 and Figure 2 Two push-pull members 90 are symmetrically arranged on both sides of the rotating shaft 80 .

[0030] Specifically, the provision of the two push-pull members 90 can make the driving gear 81 evenly stressed in the axial direction, thereby improving the stability of the position adjustment of the driving gear 81 .

[0031] In a possible implementation, the driving gear 81 is as follows: Figures 1 to 3 The structure shown, see Figures 1 to 3 , the driving gear 81 is a sector gear.

[0032] Specifically, the fan-shaped driving gear 81 facilitates the adjustment of the position of the driving gear 81. When the driving gear 81 rotates to separate from the driven gear 61, the position of the driving gear 81 is adjusted to avoid interference with the driven gear 61 when adjusting the position of the driving gear 81, thereby improving practicality.

[0033] In a possible implementation, the rotating shaft 80 is Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 An axially extending positioning groove 82 is provided on the outer peripheral wall of the rotating shaft 80 , and a positioning block 811 which is protruding and slidably matched with the positioning groove 82 is provided on the inner peripheral wall of the driving gear 81 .

[0034] Specifically, the arrangement of the positioning block 811 and the positioning groove 82 allows the driving gear 81 to move along the axial direction of the rotating shaft 80 and limits the relative rotation of the driving gear 81 and the rotating shaft 80, thereby facilitating the adjustment of the axial position of the driving gear 81 on the rotating shaft 80 and enabling the rotating shaft 80 to drive the driving gear 81 to rotate, thereby improving practicality.

[0035] In a possible implementation, the blocking plate 70 is Figure 1 The structure shown, see Figure 1 , the blocking plate 70 is located above the screw rod 60 .

[0036] Specifically, the blocking plate 70 avoids the driving gear 81 to avoid interference between the driving gear 81 and the blocking plate 70 during adjustment.

[0037] In a possible implementation, the rotating shaft 80 is Figure 1 The structure shown, see Figure 1 The rotating shaft 80 is connected to a rotating driving member 83 located outside the extension arm 11 .

[0038] Specifically, the rotary drive member 83 is fixed on the extension arm 11 , and the driving end passes through the extension arm 11 and is connected to the rotating shaft 80 , so as to drive the rotating shaft 80 to rotate, thereby realizing automatic rotation of the rotating shaft 80 .

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Automatic coal-feeding device for boiler, characterized in that: include: A bottom plate, with an extension arm extending upwardly disposed on the top; A coal conveying cylinder, used to be connected to the side of the boiler, and the coal conveying cylinder extends horizontally toward the extension arm; A hopper is arranged above the coal conveying cylinder and is connected with the top of the coal conveying cylinder through a dropping cylinder; A screw conveyor, which is rotatably connected to the coal conveying barrel through a conveying shaft and extends along the axial direction of the coal conveying barrel, and is used to convey coal into the boiler. The conveying shaft extends to the outside of the coal conveying barrel and is rotatably connected to the extension arm; A screw rod is connected between the extension arm and the blanking barrel by rotating in a horizontal direction; A blocking plate horizontally penetrates the side wall of the blanking barrel and is slidably connected to the blanking barrel to block the upper opening of the blanking barrel, wherein the blocking plate is connected to a push-pull sleeve threadedly sleeved on the outer periphery of the screw; and A rotating shaft, rotatably connected between the extension arm and the blanking barrel in a horizontal direction, and located between the screw and the conveying shaft; Among them, the outer circumferences of the screw and the conveying shaft are respectively fixedly sleeved with driven gears, the two driven gears are staggered in the axial direction of the rotating shaft, and a driving gear is slidably sleeved on the rotating shaft, and the driving gear can move along the axial direction of the rotating shaft to mesh with one of the driven gears.

2. The automatic coal-feeding device for boilers according to claim 1, characterized in that: The extension arm is provided with a push-pull member for driving the driving gear to move along the rotating shaft. The push-pull member extends along the axial direction of the rotating shaft, and the extension end is slidably connected to the driving gear along the circumference of the driving gear. The push-pull member can drive the driving gear to move along the axial direction of the rotating shaft.

3. The automatic coal-feeding device for boilers according to claim 2, characterized in that: The end surface of the driving gear close to the push-pull member is provided with an annular groove, and the telescopic end of the push-pull member is connected with a sliding block which is slidably connected with the annular groove.

4. The automatic coal-feeding device for boilers according to claim 2, characterized in that: The push-pull members are symmetrically arranged on two sides of the rotating shaft.

5. The automatic coal-feeding device for boilers according to claim 1, characterized in that: The driving gear is a sector gear.

6. The automatic coal-feeding device for boilers according to claim 1, characterized in that: An axially extending positioning groove is arranged on the outer peripheral wall of the rotating shaft, and a positioning block which is convexly arranged and slidably matched with the positioning groove is arranged on the inner peripheral wall of the driving gear.

7. The automatic coal-feeding device for boilers according to claim 1, characterized in that: The blocking plate is located above the screw rod.

8. The automatic coal-feeding device for boilers according to claim 1, characterized in that: The rotating shaft is connected with a rotating driving member located outside the extension arm.

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